MEDIUM
UPSC CDS
IMPORTANT
Earn 100

How many numbers between 500 and 1000 are divisible by 13?

50% studentsanswered this correctly

Important Questions on Number Systems

EASY
UPSC CDS
IMPORTANT
Ifab=57, then, find the value of ab+b-ab+a.
MEDIUM
UPSC CDS
IMPORTANT
A fraction becomes 911, if 2 is added to both the numerator and denominator. If 3 is added to both the numerator and the denominator it becomes 56. Find the fraction.
HARD
UPSC CDS
IMPORTANT

Simplify:

679+9245+811190+2890+2719

EASY
UPSC CDS
IMPORTANT
A, B and C start at the same time in the same direction to run around a circular stadium. 'A' completes a round in 252 seconds, 'B' in 308 seconds and 'C' in 198 seconds, all starting at the same point. After what time will they meet again at the starting point?
EASY
UPSC CDS
IMPORTANT
The product of two co-prime numbers is 323. Their LCM should be: 
EASY
UPSC CDS
IMPORTANT
Find the least number which, when divided by 48, 60, 72, 108 and 120, leaves the remainders 38, 50, 62, 98 and 110, respectively.
EASY
UPSC CDS
IMPORTANT
N is a number divisible by 17. If N+3N+5 is divided by 17, then what will be the remainder?
MEDIUM
UPSC CDS
IMPORTANT
The number of terms between 11 and 200 which are divisible by 7 but not by 3 are