The number of two digit prime numbers which remain prime even inverting the position of its digits is:

The digit at Hundred's place value of 17! is :

Sum of two numbers is thrice their difference. Their ratio is :

The total number of 3 digit numbers which have two or more consecutive digits identical is:

A number when divided by 136, leaves remainder 36. If the same number is divided by 17, the remainder will be -

A girl was asked to multiply a number by $$\frac{7}{8}$$, instead she divided the number by $$\frac{7}{8}$$ and got the …

The smallest five digit number which is divisible by 12, 18 and 21 is :

The last three-digits of the multiplication 12345 × 54321 will be