Q146: A problem in mathematics is given to 3 students whose chances of solving individually are
½ , ⅓ and ¼. The probability that the problem will be solved at least by one, is what?
½ , ⅓ and ¼. The probability that the problem will be solved at least by one, is what?
Anonymous Quiz
17%
¼
30%
¹⁄₂₄
16%
²³⁄₂₄
37%
¾
Riddles Repository
Q147: (−36) + (+12) is equal to
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Q148: The side of a square is 2cm. Semicircles are constructed on two sides of the square. What is the area of the whole figure?
Anonymous Quiz
37%
(4 + π) cm²
37%
(4 + 4π) cm²
17%
4π cm²
9%
8π cm²
Q149: What is the value of an integer, if the sum of the integer and its inverse is ⁴⁄₂?
Anonymous Quiz
40%
1
40%
2
12%
3
8%
4
Q150: ABCD is a square with side a. In centres A,B,C and D four circles are drawn such that each circle touches externally the remaining three circles. Let δ be the area interior of the square and exterior of the circles. What is the value of δ?
Anonymous Quiz
7%
a²(1 - π)
63%
a²[(4 - π) ÷ 4]
23%
a²(π - 1)
7%
(πa²) ÷ 4
Riddles Repository
Q150: ABCD is a square with side a. In centres A,B,C and D four circles are drawn such that each circle touches externally the remaining three circles. Let δ be the area interior of the square and exterior of the circles. What is the value of δ?
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Riddles Repository
Q151: The radius of a circle is twice its diameter.
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Q152: In a class of 500 students, 350 take mathematics and 284 take science. How many take both mathematicsand science? (All take math and/or science.)
Anonymous Quiz
46%
134
5%
150
13%
66
4%
398
5%
634
26%
cannot be determined from information given
Riddles Repository
Q153: 785 = 2510 - X. What is X?
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Q154: Assuming a≠b, can aᵇ = bᵃ if both a and b are positive integers?
Anonymous Quiz
52%
True
48%
False
Riddles Repository
Q154: Assuming a≠b, can aᵇ = bᵃ if both a and b are positive integers?
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Q155: Translate this! @RiddlesRepository
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