How many of the integers between 110 and 120 are prime numbers?

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The number of prime numbers between 0 and 50 is

The number of prime numbers between 301 and 320 are

What is the minimum number of four digits formed by using the digit 2, 3, 0, 7?

38649 – 1624 – 4483 = ?

587 x 999 = ?

The HCF of two numbers is 11 and their LCM is 7700. If one of these numbers is 275, then the other one is

The H.C.F. and L.C.M. of two numbers are 50 and 250 respectively. If the first number is divided by 2, the quotient is 50. The second number is

A rectangular courtyard 3.78 metres long and 5.25 metres wide is to be paved exactly with square tiles, all of the same size. What is the largest size of the tile which could be used for the purpose?

Which greatest number will divide 3026 and 5053 leaving remainders 11 and 13 respectively?

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