HARD
6th ICSE
IMPORTANT
Earn 100

Number Expressed as a sum of 3-odd primes
49

50% studentsanswered this correctly

Important Questions on Playing With Numbers

HARD
6th ICSE
IMPORTANT
Number Expressed as a sum of 3-odd primes
71 _____ 17+25+27/19+23+29
HARD
6th ICSE
IMPORTANT
The prime numbers between 1 and 100  is 
HARD
6th ICSE
IMPORTANT
Which of the following is a pair of co-primes ?
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6th ICSE
IMPORTANT
Which of the following is a pair of twin - primes between  50 and  70
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6th ICSE
IMPORTANT
The least prime number with consecutive digits is 
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6th ICSE
IMPORTANT

Who am I?

I am a 2-digit prime number . My tens digit is 5 and my ones digit is a prime number. 

EASY
6th ICSE
IMPORTANT

I am a 2-digit prime number. The total of my digits is a prime number greater than 13. Who am I?

HARD
6th ICSE
IMPORTANT

Put a  for divisible and a × for not divisible. The first has been done for you.

Number   Divisible by 
2 3 4 5 6 8 9 10 11
168 × × × ×
748