Rationale: 5 is the only prime number or odd number in the series.
The answer: (C)
Question: Find the wrong number below mentioned series
5,24,60,120,210,340
Options:
(A) 340
(B) 210
(C) 5
(D) 60
(E) none
Reasoning: (62/100) * 150 (20/100) * 250
93 - 50 = 43
Ans: (C)
Question: What is the difference between 62% of 150 nd 20% of 250.
Options:
(A) 16
(B) 17
(C) 43
(D) 19
(E) 20
Rationale: ? = 48845 + 512466 = 48845 + 8541 = 57386
The answer: (E)
Question: What should come in the place of the question mark(?) in the following equation?
69012 20167 + (51246 6) = ?
Options:
(A) 57385
(B) 57286
(C) 57476
(D) 57368
(E) None of these
Reasoning: 10 books can be rearranged in 10! ways consider the two books taken as a pair then number of favourable ways of getting these two books together is 9! 2!
Required probability = 1/5
Ans: (C)
Question: 10 books are placed at random in a shelf. The probability that a pair of books will always be together is
Options:
(A) 1/10
(B) 9/10
(C) 1/5
(D) 3/10
(E) 1/2
Rationale: 1. Subtract 1 from both sides: 4x + 1 - 1 = 37 - 1 2. Simplify both sides: 4x = 36 3. Divide both sides by 4: 4. Simplify both sides: x = 9
The answer: (D)
Question: Solve below question 4x + 1 = 37
Options:
(A) -8
(B) -9
(C) -5
(D) 9
(E) 1
Rationale: It is clear that 22 x 48 = 10 x 55 + K + 11 x 40 K = 66
The answer: (E)
Question: The average mark obtained by 22 candidates in an examination is 48. The average of the first ten is 55 while the last eleven is 40 .The marks obtained by the 11th candidate is ?
Options:
(A) 22
(B) 0
(C) 49
(D) 58
(E) 66