Ques:- Find out the wrong number in a given series.
6, 13, 18, 25, 30, 37, 40
6, 13, 18, 25, 30, 37, 40
A. 25
B. 30
C. 37
D. 40
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