Find the value of √43+√31+√21+√16

Sum of all 2 digit natural numbers which are divisible by 7 is

A and B can do a work in 12 days, B and C in 15 days, C and A in 20 days. In how many days will they finish it together

A shopkeeper mixes 20 kgs of rice which cost Rs. 5 per kg with 35 kg of rice which cost Rs. 7 per kg. Then he sells the mixture at Rs. 6.50 per kg. Find his profit percentage.

HCF of 3240, 3600 and a third number is 36 and their LCM is 2⁴×3⁵×5²×7². The third number is

The sum of the ages of a son and father is 72 years. After 12 years the age of the father will be 3 times that of the son. What is the age of the son now