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Male (+) Female (-) Siblings (=) Spouse (x)
If x and y are the two digits of the number 115xy such that this number is divisible by 90, then the value of x + y is:
If X + Y = 23 and XY = 126, what is the value of (X)² + (Y)² ?
Happy and Sad are running on a circular track of radius 245 metres. Happy can complete a round in 200 seconds and the speed of Sad is twice the speed of...
Find the average of the cubes of the first 7 natural numbers.
The ratio between the sum of the digits of a two-digit number and that two-digit number is 1 : 6. If the digit in the unit's place is three less than th...
The sum of four consecutive counting numbers is 154. Find the smallest number?
A farmer has 1457 cows and 3055 buffaloes. He wants to graze them in minimum number of groups in such a way that each group has only one type of animal ...