Ques:- Find out the wrong number in the series:
64, 71, 80, 91, 104, 119, 135, 155
64, 71, 80, 91, 104, 119, 135, 155
A. 71
B. 80
C. 104
D. 135
Ques:- The H.C.F. of two numbers is 8. Which one of the following can never be their L.C.M.?
A. 24
B. 48
C. 56
D. 60
Ques:- Find out the wrong number in a given series.
2, 3, 6, 15, 52.5, 157.5, 630
2, 3, 6, 15, 52.5, 157.5, 630
A. 6
B. 15
C. 52.5
D. 157.5
Ques:- In what ratio must a grocer mix two varieties of pulses costing Rs. 15 and Rs. 20 per kg respectively so as to get a mixture worth Rs. 16.50 per kg?
A. 3 : 7
B. 5 : 7
C. 7 : 3
D. 7 : 5