Ques:- A four digit number is divisible by 7 becomes divisible by 3, when 10 is added to it. The largest such number is
A. 9947
B. 9987
C. 9989
D. 9996
Ques:- What percentage of numbers from 1 to 70 have squares that end in the digit 1?
A. 1
B. 14
C. 20
D. 21