Math : MCQ
1. The figure below is a ______ triangle. āĻ¤āĻ˛ā§° āĻāĻŋāĻ¤ā§ā§°āĻā§ āĻāĻāĻž ______ āĻ¤ā§ā§°āĻŋāĻā§āĻāĨ¤
Options / āĻŦāĻŋāĻāĻ˛ā§āĻĒ: (a) Equilateral (āĻ¸āĻŽāĻŦāĻžāĻšā§) (b) Isosceles (āĻ¸āĻŽāĻĻā§āĻŦāĻŋāĻŦāĻžāĻšā§) (c) Obtuse-angled (āĻ¸ā§āĻĨā§āĻ˛āĻā§āĻŖā§) (d) Right-angled (āĻ¸āĻŽāĻā§āĻŖā§) (e) Scalene (āĻŦāĻŋāĻˇāĻŽāĻŦāĻžāĻšā§)
Ans / āĻāĻ¤ā§āĻ¤ā§°: (a) Equilateral (āĻ¸āĻŽāĻŦāĻžāĻšā§)
Explanation / āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž: An equilateral triangle has three equal sides and three equal angles (60° each). (āĻ¸āĻŽāĻŦāĻžāĻšā§ āĻ¤ā§ā§°āĻŋāĻā§āĻā§° āĻ¤āĻŋāĻ¨āĻŋāĻāĻāĻž āĻŦāĻžāĻšā§ āĻ¸āĻŽāĻžāĻ¨ āĻā§°ā§ āĻ¤āĻŋāĻ¨āĻŋāĻāĻāĻž āĻā§āĻŖ 60° āĻšāĻ¯āĻŧāĨ¤)
2.Express three hundred thousand and thirty-three in figures.(āĻ¤āĻŋāĻ¨āĻŋ āĻ˛āĻžāĻ āĻ¤ā§āĻ¤ā§ā§°āĻŋāĻļ āĻ¸āĻāĻā§āĻ¯āĻžāĻ¤ āĻĒā§ā§°āĻāĻžāĻļ āĻā§°āĻāĨ¤)
Options / āĻŦāĻŋāĻāĻ˛ā§āĻĒ: (a) 300033 (b) 300330 (c) 303300 (d) 3003300 (e) 3000033
Ans / āĻāĻ¤ā§āĻ¤ā§°: (a) 300033
Explanation / āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž: 300,000 + 33 = 300,033.
3. By what must 3.816 be multiplied to get 381.6 ? (381.6 āĻĒāĻžāĻŦāĻ˛ā§ 3.816 āĻ āĻāĻŋāĻŽāĻžāĻ¨ā§°ā§ āĻā§āĻŖ āĻā§°āĻŋāĻŦ āĻ˛āĻžāĻāĻŋāĻŦ ?)
Options / āĻŦāĻŋāĻāĻ˛ā§āĻĒ: (a) 10 (b) 100 (c) 1000 (d) 10000 (e) 100000
Ans / āĻāĻ¤ā§āĻ¤ā§°: (b) 100
Explanation / āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž: Multiplying by 100 moves the decimal point 2 places to the right.
3.816 × 100 = 381.6 (100-ā§°ā§ āĻā§āĻŖ āĻā§°āĻŋāĻ˛ā§ āĻĻāĻļāĻŽāĻŋāĻ ā§¨ āĻā§° āĻ¸ā§āĻāĻĢāĻžāĻ˛ā§ āĻ¸ā§°ā§āĨ¤ 3.816 × 100 = 381.6)
4. Which of the following numbers between 20 and 50 are multiples of 9 ?(20 āĻā§°ā§ 50-ā§° āĻŽāĻžāĻā§° āĻ¤āĻ˛ā§° āĻā§āĻ¨āĻŦā§ā§° āĻ¸āĻāĻā§āĻ¯āĻž 9-ā§° āĻā§āĻŖāĻŋāĻ¤āĻ ?)
Options / āĻŦāĻŋāĻāĻ˛ā§āĻĒ: (a) 9, 18, 27 (b) 18, 27, 36 (c) 18, 27, 45 (d) 36, 45, 54 (e) 27, 36, 45
Ans / āĻāĻ¤ā§āĻ¤ā§°: (e) 27, 36, 45
Explanation / āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž: Multiples of 9 are 9, 18, 27, 36, 45, 54... Between 20 and 50 are 27, 36, 45. (9-ā§° āĻā§āĻŖāĻŋāĻ¤āĻāĻ¸āĻŽā§āĻš āĻšā§āĻā§ 9, 18, 27, 36, 45, 54... 20 āĻā§°ā§ 50-ā§° āĻŽāĻžāĻāĻ¤ 27, 36, 45 āĻāĻā§āĨ¤)
5. A line that runs from the center of a circle to any point on it is called ______. (āĻŦā§āĻ¤ā§āĻ¤ā§° āĻā§āĻ¨ā§āĻĻā§ā§°ā§° āĻĒā§°āĻž āĻĒā§°āĻŋāĻ§āĻŋā§° āĻ¯āĻŋāĻā§āĻ¨ā§ āĻŦāĻŋāĻ¨ā§āĻĻā§āĻ˛ā§ āĻ¯ā§ā§ąāĻž ā§°ā§āĻāĻžāĻāĻŖā§āĻĄāĻ āĻāĻŋ āĻāĻ¯āĻŧ ?)
Options / āĻŦāĻŋāĻāĻ˛ā§āĻĒ: (a) Chord (āĻā§āĻ¯āĻž) (b) Circumference (āĻĒā§°āĻŋāĻ§āĻŋ) (c) Diameter (āĻŦā§āĻ¯āĻžāĻ¸) (d) Radius (āĻŦā§āĻ¯āĻžāĻ¸āĻžā§°ā§āĻ§) (e) Segment (āĻāĻŖā§āĻĄ)
Ans / āĻāĻ¤ā§āĻ¤ā§°: (d) Radius (āĻŦā§āĻ¯āĻžāĻ¸āĻžā§°ā§āĻ§)
Explanation / āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž: A radius joins the centre of a circle to any point on the circle. (āĻŦā§āĻ¯āĻžāĻ¸āĻžā§°ā§āĻ§ āĻšā§āĻā§ āĻŦā§āĻ¤ā§āĻ¤ā§° āĻā§āĻ¨ā§āĻĻā§ā§°ā§° āĻĒā§°āĻž āĻĒā§°āĻŋāĻ§āĻŋā§° āĻ¯āĻŋāĻā§āĻ¨ā§ āĻŦāĻŋāĻ¨ā§āĻĻā§āĻ˛ā§ āĻ¯ā§ā§ąāĻž ā§°ā§āĻāĻžāĻāĻŖā§āĻĄāĨ¤)
6. What number is in the same ratio to 64 as 5 is to 8 ? (5 : 8 = x : 64 āĻšāĻ˛ā§ x-ā§° āĻŽāĻžāĻ¨ āĻāĻŋāĻŽāĻžāĻ¨ ?)
Options / āĻŦāĻŋāĻāĻ˛ā§āĻĒ: (a) 512 (b) 320 (c) 40 (d) 25 (e) 8
Ans / āĻāĻ¤ā§āĻ¤ā§°: (c) 40
Explanation / āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž: x = 5 × 64 / 8 = 40
7. Find the quotient if 3.5 is divided by 14. (3.5 āĻ 14-ā§°ā§ āĻāĻžāĻ āĻā§°āĻŋāĻ˛ā§ āĻāĻžāĻāĻĢāĻ˛ āĻāĻŋāĻŽāĻžāĻ¨ ?)
Options / āĻŦāĻŋāĻāĻ˛ā§āĻĒ: (a) 40.0 (b) 25.0 (c) 4.0 (d) 2.5 (e) 0.25
Ans / āĻāĻ¤ā§āĻ¤ā§°: (e) 0.25
Explanation / āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž: 3.5 ÷ 14 = 0.25.
8. What is the place value of 5 in 2851 ? (2851 āĻ¸āĻāĻā§āĻ¯āĻžāĻ¤ 5-ā§° āĻ¸ā§āĻĨāĻžāĻ¨āĻŽāĻžāĻ¨ āĻāĻŋ ?)
Options / āĻŦāĻŋāĻāĻ˛ā§āĻĒ: (a) Hundreds (āĻļāĻ¤āĻ) (b) Hundredths (āĻļāĻ¤āĻžāĻāĻļ) (c) Tens (āĻĻāĻšāĻ) (d) Thousands (āĻ¸āĻšāĻ¸ā§ā§°) (e) Thousandths (āĻ¸āĻšāĻ¸ā§ā§°āĻžāĻāĻļ)
Ans / āĻāĻ¤ā§āĻ¤ā§°: (c) Tens (āĻĻāĻšāĻ)
Explanation / āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž: In 2851, the digit 5 is in the tens place (50). (2851 āĻ¸āĻāĻā§āĻ¯āĻžāĻ¤ 5-āĻā§ āĻĻāĻšāĻā§° āĻ¸ā§āĻĨāĻžāĻ¨āĻ¤ āĻāĻā§āĨ¤ āĻāĻ¯āĻŧāĻžā§° āĻ¸ā§āĻĨāĻžāĻ¨āĻŽāĻžāĻ¨ 50āĨ¤)
9. Ade and Ola share âĻ4000 in the ratio 3 : 5. Find the amount Ade received. (Ade āĻā§°ā§ Ola āĻ âĻ4000 āĻ 3 : 5 āĻ āĻ¨ā§āĻĒāĻžāĻ¤ā§ āĻāĻžāĻ āĻā§°āĻŋāĻ˛ā§ Ade-āĻ āĻāĻŋāĻŽāĻžāĻ¨ āĻāĻāĻž āĻĒāĻžāĻŦ ?)
Options / āĻŦāĻŋāĻāĻ˛ā§āĻĒ: (a) âĻ1000 (b) âĻ1500 (c) âĻ2000 (d) âĻ2500 (e) âĻ4000
Ans / āĻāĻ¤ā§āĻ¤ā§°: (b) âĻ1500
Explanation / āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž: Total parts = 3 + 5 = 8.(āĻŽā§āĻ āĻ
āĻāĻļ = 3 + 5 = 8āĨ¤)
Ade's share (Ade-ā§° āĻ
āĻāĻļ) = 3/8 × 4000 = 1500
10. Simplify 2/3 + 1/5 + 3/5
Options / āĻŦāĻŋāĻāĻ˛ā§āĻĒ: (a) 1 (b) 1 2/15 (c) 1 7/15 (d) 1 3/5 (e) 2 1/15
Ans / āĻāĻ¤ā§āĻ¤ā§°: (c) 1 7/15
Explanation / āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž: 1st (āĻĒā§ā§°āĻĨāĻŽā§)1/5 + 3/5 = 4/5 Then,(āĻ¤āĻžā§° āĻĒāĻŋāĻāĻ¤,)
2/3 + 4/5 = 10/15 + 12/15 = 22/15 = 1 7/15