In an examination, a student scores 4 marks for every correct answer and losses 1 mark for every wrong answer. A student…

A heap of pebbles when made up into group of 32, 40, 72, leaves the remainder 10, 18 and 50 respectively. Find least num…

The sum of the numerator and denominator of a positive fraction is 11. If 2 is added to both numerator and denominator, …

What is the unit digit in {(6374)<sup>1793</sup> x (625)<sup>317</sup> x (341<sup>491</…

On multiplying a number by 7 all the digit in the product appear as 3's , the smallest such numbers is -

A man ate 100 grapes in 5 days. Each day he ate 6 more grapes then those he ate on the earlier day. How many grapes did …

The remainder , when (15<sup>23</sup> + 23<sup>23</sup>) is divided by 19, is

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