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Mathematics Solved MCQs Online Quiz Test
Q.1: A box contains nine bulbs out of which 4 are defective. If four bulbs are chosen at random, find the probability that at least one bulb is good.
- 6/63
- 2/63
- 125/126
- 1/126
C
Q.2: A box contains nine bulbs out of which 4 are defective. If four bulbs are chosen at random, find the probability that all the four bulbs are defective.
- 62/63
- 125/126
- 1/63
- 1/126
D
Q.3: Three 6 faced dice are thrown together. The probability that exactly two dice show the same number on them is -.
- 5/9
- 5/12
- 1/36
- 7/12
B
Q.4: Three 6 faced dice are thrown together. The probability that no two dice show the same number on them is———-?
- 7/12
- 5/9
- 1/36
- 5/12
B
Q.5: Three 6 faced dice are thrown together. The probability that all the three show the same number on them is -.
- 1/216
- 1/36
- 5/9
- 5/12
B
Q.6: A basket has 5 apples and 4 oranges. Three fruits are picked at random. The probability that at least 2 apples are picked is———-?
- 25/42
- 9/20
- 10/23
- 41/42
A
Q.7: A bag contains 7 green and 8 white balls. If two balls are drawn simultaneously, the probability that both are of the same colour is -.
- 8/15
- 2/5
- 3/5
- 7/15
D
Q.8: Area of a square with side x is equal to the area of a triangle with base x. The altitude of the triangle is:——–?
- x/2
- x
- 2x
- 4x
C
Q.9: If the diagonal of a square is doubled. How does the area of the square change?
- Becomes fourfold
- Becomes threefold
- Becomes twofold
- none of the above
A
Q.10: If the base of rectangle is increased by 10 % and the area is unchanged then the corresponding altitude must be decreased by:——–?
- 9 1/11 %
- 10%
- 11%
- 11 1/9 %
A