A bag contains 4 violet, 2 grey and 6 black pullovers. 3 pullovers are chosen at random. What is the probability that at least 2 pullovers chosen will be violet?
There will be two cases: Case I: 2 violet, 1 (grey or black) Probability = 4C2 × 8C1/ 12C3 = 12/55 Case II: all violet Probability = 4C3/12C3 = 1/55 Total probability = 12/55 + 1/55 = 13/55
Which two signs need to be interchanged to make the following equation correct?
62 – 14 × 75 ÷ 15 + 50 = 82
Which one of the given mathematical operations will result in 429?
If ‘@’ means ‘+’, ‘#’ means ‘-’, ‘$’ means ‘×’ and ‘%’ means ‘÷’, then what is the value of the following expression?...
If 6$144 = 24, 8$232 = 29 then what is the value of 5$110 = ?
Select the correct combination of mathematical signs that can sequentially replace the “@” sign and balance the following equation.
14@6@8@3@...
Select the correct combination of mathematical signs that can sequentially replace the * signs and balance the given equation.
364 * 4 * 7 * 4 * 12 = 75
Given below an equation having four blanks you have to check from the alternatives which among the given is correct?
21 _ 51 _ 7 _ 12 _ 75
Select the correct combination of mathematical signs that can sequentially replace ‘*’ sign and balance the equation given below.
82 * 28 * 7...
Select the correct combination of mathematical signs that can sequentially replace the sign * and make the equation correct.
3 * 12 * 4 * 5 * 4 * 116
If ‘A’ means (÷), ‘B’ means (×), ‘C’ means (+), and ‘D’ means (-), then what is the value of the expression:
24 B 2 C 24 A 4...
