Thrice the square of a natural number decreased by four times the number is equal to 50 more than the number. The number is :

A man has eaten 100 grapes in 5 days. He eats 6 more grapes every day in comparison to the previous day. How many grapes did he eat on the first day?

A is inversely proportional to square of B whereas directly proportional to C. Value of A was 27 when value of B was 4 and value of C was 6. Find the value of A when value of B will be 3 and value of C will be 8.

Direction : What should come in place of the question (?) in the following question.

√(?) + 15² = 235

The sum of four numbers is 64. If we add 3 to the first number, 3 is subtracted from the second number, the third is multiplied by 3 and the fourth is divided by 3, then all the results are equal. What is the difference between the largest and the smallest of the original number?

The difference between the average of squares of the last four numbers and the product of the first two numbers of 6 consecutive odd numbers is 114. Find the first number.

What should be added to $$ {10 \ over 11} $$ to get the sum $$ {11 \ over 10} $$?

The difference between the greatest and the least four-digit numbers that begins with 3 and ends with 5 is: