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
Ques:- Find out the wrong number in the series:
15, 16, 34, 105, 424, 2124, 12576
15, 16, 34, 105, 424, 2124, 12576
A. 34
B. 105
C. 424
D. 2124