
Ques:- In what ratio must a grocer mix two varieties of tea worth Rs. 60 a kg and Rs. 65 a kg so that by selling the mixture at Rs. 68.20 a kg he may gain 10%?
A. 3 : 1
B. 3 : 2
C. 3 : 4
D. 4 : 5
Ques:- The number of prime factors in the expression (6)10 x (7)17 x (11)27 is
A. 44
B. 54
C. 64
D. 71
Ques:- Find out the wrong number in a given series.
124, 133, 142, 152, 160
124, 133, 142, 152, 160
A. 133
B. 142
C. 152
D. 160