Question
The average of 5 numbers is 26. Four of the numbers are
22, 25, 30 and 28. What is the fifth number?Solution
ATQ, Total sum of 5 numbers = 5 × 26 = 130 Sum of four given numbers = 22 + 25 + 30 + 28 = 105 Fifth number = 130 − 105 = 25
Sum of all positive integers from 1 to 100 is
Find the unit digit of the expression: 3! + 4! + 5! + 6! + ........ + 1111!.
- Two numbers add up to 98. If the LCM of the numbers is 315 and the HCF is 9, find the smaller of the two numbers.
What is the smallest number that should be added to 673 so that the sum becomes exactly divisible by 9?
- The sum of two numbers is 801. When the larger number is divided by the smaller one, it results in a quotient of 41 with a remainder of 3. What is the diff...
Rs 720 is to be divided among P, Q and R so that P gets 3/5 of Q’s share and R gets 1/3 of P’s share. Share of R is:
Find the greatest 4-digit number which is exactly divisible by 12, 15 and 21.
103² + 75² - 25² =?
The cube of the difference between two given natural numbers is 1000, while the product of these two given numbers is 56. Find the positive difference b...
The sum of two numbers is 18 while the sum of their squares is 164. Find the sum of the cubes of those two numbers.
