Maths Practice Question and Answer
8 Q: The number 2918245 is divisible by which of the following numbers?
1030 064abdfb8b394764d11c76888
64abdfb8b394764d11c76888- 13false
- 211true
- 312false
- 49false
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Answer : 2. "11"
Q: Find the single equivalent discount for successive discounts of 12%, 18% and 25% on the marked price of a car.
882 064abde5a65d2524cbf218a03
64abde5a65d2524cbf218a03- 135.28%false
- 242.65%false
- 340.25%false
- 445.88%true
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Answer : 4. "45.88%"
Q: The angle of elevation of the top of a building at a distance of 70 m from its foot on a horizontal plane is found to be 60°. Find the height of the building.
572 064abdd5a8c254a4ceae340be
64abdd5a8c254a4ceae340be- 1$$70 \sqrt { 3} $$mtrue
- 2$$60 \sqrt { 3} $$mfalse
- 3$$50 \sqrt { 3} $$mfalse
- 4$$70 \sqrt { 2} $$mfalse
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Answer : 1. "$$70 \sqrt { 3} $$m"
Q: The average of 20 numbers is 32. If two numbers are 29 and 31, then what is the average of the remaining numbers (correct up to two decimals)?
1198 064abdcbb299b7896000b4560
64abdcbb299b7896000b4560- 131.24false
- 230.22false
- 334.44false
- 432.22true
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Answer : 4. "32.22"
Q: Find the standard deviation of the following data (rounded off to two decimal places).
5, 3, 4, 7
582 064abdab665d2524cbf2181d5
64abdab665d2524cbf2181d5- 11.48true
- 23.21false
- 34.12false
- 42.45false
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Answer : 1. "1.48 "
Q: Select the INCORRECT formula from the following options.
512 064abd872299b7896000b39a6
64abd872299b7896000b39a6- 1false
cosec2θ - cot2θ=1
- 2false
sin2θ + cos2θ=1
- 3true
sec2θ + cos2θ=1
- 4false
sec2θ – tan2θ=1
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Answer : 3. "sec2θ + cos2θ=1
"
Q: The LCM of x2 − 8x + 15 and x2 − 5x + 6 is:
1493 064a5429b65d2524cbf0bef9d
64a5429b65d2524cbf0bef9d- 1(x - 2) (x - 3) (x − 5)true
- 2(x − 6)2 (x + 1) (x − 3)false
- 3(x − 6) (x + 1) (x − 3)false
- 4(x + 6) (x + 1) (x − 3)false
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Answer : 1. " (x - 2) (x - 3) (x − 5) "
Q: What is the ratio of the simple interest earned on a certain amount at the rate of 21% per annum for 8 years to that earned on the same sum at the same rate for 21 years?
808 064a5449fdc607a4d2b2861b8
64a5449fdc607a4d2b2861b8- 18:21true
- 221:5false
- 35:21false
- 421:8false
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