Problems related to numbers

Problems related to income and expenditure

Problems related to ages

Problems related to concentric circles

Problems related to percentages

Problems related to finding the no of digits in a given no

word problems related to operations of sets

Mention two important problems relating to nuclear energy.

What are environmental problems related to atomic reactors?

Write two problems related to iodine deficiency in India.

Vinay want to solve a problem related to mirrors. What are the rules to be followed by him in order to solve the problem ?