Maths Logical Questions and Answers
If the ratio of two numbers is 13 : 15 and their L.C.M. is 39780. So are the numbers?
(A) 2550 & 3450
(B) 2652 & 3060
(C) 2250 & 2340
(D) 2450 & 3450
Correct Answer : B
A man takes 6 km distance to go around the rectangular area. If the area of the rectangle is 2 sq. km. find the difference between length and breadth.
(A) 2 km.
(B) 0.5 km.
(C) 1 km
(D) 0.75
Correct Answer : C
which of the following meanings of the arithmetical signs will yield the value ' zero ' for the expression given below?
200x100 + 300 x 200 10÷2 + 40
(A) + means –, – means x, x means ÷, ÷ means +
(B) + means –, – means ÷, x means +, ÷ means ×
(C) + means ×, – means –, x means ÷, ÷ means +
(D) None of these
Correct Answer : B
If 6 * 9 – 4 = 58 and 3 * 9 – 7 = 34, then in the expression A * 4 – 9 = 91, what is the value of 'A'?
(A) 6.5
(B) 17.5
(C) 20.5
(D) 30.5
Correct Answer : C
If 2 is added to each even digit and 1 is subtracted from each odd digit in the number 621754, then what will be the sum of number/numbers not repeated in the new number?
(A) 5
(B) 8
(C) 6
(D) 4
(E) 10
Correct Answer : B
The ratio of the present ages of Veeru and Sunita is 14:17 respectively. After 6 years from now the ratio of their ages will be 17:20, then what is the present age of Sunita -
(A) 34 years
(B) 21 years
(C) 68 years
(D) 17 years
Correct Answer : A
There were 15 persons in a group, they shook hands with each other, then tell how many times the total number of hands were shaken -
(A) 210
(B) 225
(C) 105
(D) 150
Correct Answer : C
Direction: In the following questions 3 series are given. You have to find the value of a, b and c by identifying the pattern of the series and then you have to establish the relation among a, b and c?
I. 102, 107, 117, 134, a
II. 130, 115, 135, 110, b
III. c, 80, 120, 300, 1050
(A) b < a=c
(B) b>a=c
(C) b=a>c
(D) b=a
(E) None of these
Correct Answer : A
If '÷' means '+'; '–' means '×'; '×' means '÷' and '+' means '–'; then
111 – 21 ÷ 7 × 2 + 4 – 127 = ?
(A) $$ {3651\over 2}$$
(B) $$ {3215\over 2}$$
(C) $$ {3316\over 9}$$
(D) $$ {3652\over 5}$$
(E) $$ {3653\over 2}$$
Correct Answer : E
If ' + ' means ' _ ' ; ' – ' means ' x ' ; ' x ' means ' ÷ ' ' ÷ ' means ' + ' , then
25 × 5 ÷ 30+ 8 - 2 = ?
(A) 54
(B) 15
(C) 19
(D) 18
Correct Answer : C
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Rajesh Bhatia
A Writer, Teacher and GK Expert. I am an M.A. & M.Ed. in English Literature and Political Science. I am highly keen and passionate about reading Indian History. Also, I like to mentor students about how to prepare for a competitive examination. Share your concerns with me by comment box. Also, you can ask anything at linkedin.com/in/rajesh-bhatia-7395a015b/.
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