Subject :Rea Class : Class 9
In each of the following questions, there is a series. One term of the series is wrong. Find out the wrong term from four alternatives given below the series.
7, 10, 15, 21, 31, 42, 55
A10
B21
C31
D42
Ans 1:
Class : Class 9
yes thanks
Ans 2:
Class : Class 10
All numbers are divisible by sum of 4 and multiples of 3. Eg. 4+6=10. Whereas it is not possible with 42.