IMOClass 10 › Full Syllabus Test

Full Syllabus Mock Test

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Q1 Logical Reasoning
A semicircle is what fraction of the full circle's area?
A semicircle is half the circle.
Q2 Mathematical Reasoning
The area of a ring between two concentric circles of radii 14 cm and 7 cm (π = 22/7) is:
O147
Area = π(R² − r²) = (22/7)(196 − 49) = (22/7)(147) = 462 cm².
Q3 Mathematical Reasoning
If a prime number p divides a², then:
By the fundamental theorem of arithmetic, if a prime divides a² it must appear in the factorisation of a, so p divides a.
Q4 Logical Reasoning
The sequence of even natural numbers forms an AP with common difference:
2, 4, 6, 8, … increases by 2.
Q5 Mathematical Reasoning
The roots of x² − 7x + 12 = 0 are:
x² − 7x + 12 = (x − 3)(x − 4), so the roots are 3 and 4.
Q6 Everyday Mathematics
A circular coin of radius 1 cm rests touching a ruler's edge. The edge is a tangent, so the distance from the coin's centre to the edge is:
The distance from the centre to a tangent equals the radius, 1 cm.
Q7 Mathematical Reasoning
In a right triangle, the square of the hypotenuse equals:
Pythagoras' theorem: hypotenuse² = base² + height².
Q8 Achievers Section
The area of the minor segment of a circle of radius 14 cm cut off by a quarter (90°) sector (π = 22/7) is:
O90°14
Sector 154 cm² minus the right triangle ½ × 14 × 14 = 98 cm² gives 56 cm².
Q9 Everyday Mathematics
A conical heap of sand has base radius 12 m and height 5 m (π = 22/7). Its slant height is:
l = √(12² + 5²) = √169 = 13 m.
Q10 Mathematical Reasoning
sin(90° − θ) equals:
Complementary-angle relation: sin(90° − θ) = cos θ.
Q11 Everyday Mathematics
A pizza of radius 14 cm is cut into 8 equal slices. The area of one slice (π = 22/7) is:
Total area = 616 cm²; one of 8 slices = 616 ÷ 8 = 77 cm².
Q12 Everyday Mathematics
Two straight roads are tangents drawn from a junction P to a circular park. A visitor notes the two tangent paths to the park are:
OPAB
Tangents from an external point are equal, so the two paths are equal.
Q13 Mathematical Reasoning
Two fair coins are tossed together. The probability of getting two heads is:
Only HH out of {HH, HT, TH, TT} is favourable, so 1/4.
Q14 Mathematical Reasoning
The sum of the squares of the roots of x² − 5x + 6 = 0 is:
Sum = 5, product = 6, so sum of squares = 25 − 12 = 13.
Q15 Logical Reasoning
If α, β, γ are the zeroes of ax³ + bx² + cx + d, then α + β + γ equals:
For a cubic, the sum of the zeroes is −b/a.
Q16 Mathematical Reasoning
For x² − kx + 4 = 0 to have equal roots, k equals:
Equal roots need k² − 16 = 0, so k = ±4.
Q17 Everyday Mathematics
A batsman scores 30, 45, 0, 60 and 15 in five innings. His mean score is:
(30 + 45 + 0 + 60 + 15) ÷ 5 = 150 ÷ 5 = 30.
Q18 Mathematical Reasoning
The distance of the point (5, 12) from the origin is:
xyOO(5,12)
√(5² + 12²) = √169 = 13.
Q19 Logical Reasoning
The graph of a quadratic polynomial that opens upward has a:
An upward parabola (a > 0) has a lowest point, i.e. a minimum.
Q20 Mathematical Reasoning
For x² + kx + 9 = 0 to have equal roots, k equals:
Equal roots need k² − 36 = 0, so k = ±6.
Q21 Mathematical Reasoning
The area of a sector of angle 60° in a circle of radius 21 cm (π = 22/7) is:
O60°21
(60/360) × (22/7) × 441 = (1/6) × 1386 = 231 cm².
Q22 Logical Reasoning
The point (−3, 5) lies in which quadrant?
xyO(−3, 5)
Negative x with positive y places it in Quadrant II.
Q23 Mathematical Reasoning
From an external point P, OP = 10 cm and the radius is 6 cm. The length of the tangent from P is:
OAP90°6?
Tangent length = √(OP² − r²) = √(100 − 36) = 8 cm.
Q24 Achievers Section
A train covers a distance at a uniform speed. If the speed were 10 km/h more it would take 2 h less, and 10 km/h less it would take 3 h more. The distance is:
With distance D, speed s and time t: D = st, D = (s + 10)(t − 2), D = (s − 10)(t + 3). Solving gives s = 50, t = 12, D = 600 km.
Q25 Achievers Section
The points (3, 0), (6, 4) and (−1, 3) are the vertices of:
xyO(3,0)(6,4)(−1,3)
The side lengths are 5, 5 and 5√2, and 5² + 5² = (5√2)², so it is a right isosceles triangle.
Q26 Everyday Mathematics
A shop sells shoes of sizes 6, 7, 7, 8, 7, 9 and 7. The modal size is:
16471819
Size 7 sells most often, so it is the mode.
Q27 Logical Reasoning
A standard deck contains how many cards?
A standard deck has 52 cards.
Q28 Everyday Mathematics
A circular flower bed of radius 14 m is to be turfed at ₹5 per m² (π = 22/7). The cost is:
Area = 616 m²; cost = 616 × 5 = ₹3080.
Q29 Logical Reasoning
Which statement is true?
There is a tangent at every point of the circle, so there are infinitely many.
Q30 Achievers Section
A quadratic polynomial whose zeroes have sum 3 and product −10 is:
x² − (sum)x + product = x² − 3x − 10.
Q31 Mathematical Reasoning
The length of the tangent from a point 25 cm from the centre of a circle of radius 7 cm is:
OAP90°7?
√(25² − 7²) = √576 = 24 cm.
Q32 Logical Reasoning
The angle in a semicircle is a right angle; this means a diameter subtends at the circumference an angle of:
The angle in a semicircle is 90°.
Q33 Logical Reasoning
A standard deck contains how many cards?
A standard deck has 52 cards.
Q34 Mathematical Reasoning
A right triangle has hypotenuse 13 cm and one leg 5 cm. The other leg is:
ABC12 cm13 cm5 cm90°
√(13² − 5²) = √144 = 12 cm.
Q35 Everyday Mathematics
A firm's profit (in ₹ thousand) is P = −x² + 10x − 16. It breaks even (P = 0) when x equals:
−x² + 10x − 16 = 0 gives x² − 10x + 16 = (x − 2)(x − 8) = 0, so x = 2 or 8.
Q36 Mathematical Reasoning
The area of the triangle with vertices (1, 1), (2, 3) and (4, 5) is:
xyO(1,1)(2,3)(4,5)
Area = ½|1(3 − 5) + 2(5 − 1) + 4(1 − 3)| = ½|−2 + 8 − 8| = 1.
Q37 Mathematical Reasoning
A right triangle has legs 6 cm and 8 cm. Its hypotenuse is:
ABC8 cm10 cm6 cm90°
√(6² + 8²) = √100 = 10 cm.
Q38 Logical Reasoning
If two solids have equal volumes but different shapes, then their surface areas are:
7 m25 m
Equal volume does not force equal surface area.
Q39 Logical Reasoning
Which of these is always equal to 1?
sin²θ + cos²θ = 1 for every θ.
Q40 Achievers Section
The area of an equilateral triangle of side 6 cm is:
ABC6 cm6 cm6 cm
Area = (√3/4)·6² = (√3/4)·36 = 9√3 cm².
Q41 Logical Reasoning
A tangent and a radius drawn to the point of contact are always:
The radius is perpendicular to the tangent at the contact point.
Q42 Logical Reasoning
The measure most affected by an extreme value is the:
The mean uses every value, so an outlier shifts it the most.
Q43 Everyday Mathematics
Two tankers hold 850 L and 680 L. The largest measuring can that fills each an exact number of times holds:
The capacity is HCF(850, 680) = 170 L.
Q44 Logical Reasoning
Adding a constant to every observation leaves unchanged the:
Shifting all data keeps the spread (range) the same while moving the averages.
Q45 Mathematical Reasoning
The decimal expansion of 17/8 is:
8 = 2³, so the expansion terminates: 17 ÷ 8 = 2.125.
Q46 Logical Reasoning
A polynomial whose graph cuts the x-axis at exactly three points has:
Each x-intercept is a real zero, so there are 3 real zeros.
Q47 Mathematical Reasoning
If the circumference of a circle is 44 cm (π = 22/7), its radius is:
2πr = 44 gives r = 44 ÷ (2 × 22/7) = 7 cm.
Q48 Mathematical Reasoning
The value of cos 0° is:
cos 0° = 1.
Q49 Everyday Mathematics
The hypotenuse of a right triangle is 13 cm and one side is 7 cm more than the other. The shorter side is:
x² + (x + 7)² = 169 gives 2x² + 14x − 120 = 0, i.e. x² + 7x − 60 = (x + 12)(x − 5) = 0, so x = 5 cm.
Q50 Mathematical Reasoning
The product of the roots of 3x² − 6x + 2 = 0 is:
Product = c/a = 2/3.
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