Which year marked India's first participation in the

What will come in the place of question mark (?) in the given expression? 

48 ÷ 4 × (3 + 5) – 6² + 10 = ?

18/2 of 3/9 of 2/6 of 69690= ?

If (7a + b) : (7a - b) = 7:3, then find the value of  a:b?

Calculate the simplified result of the following expression: 12 × 18 ÷ 3 + 36 of 3² ÷ 3

What will come in the place of question mark (?) in the given expression?

? × 18 + 3072 ÷ 24 = 20% of 1900 

42 + 52% of 300 - ?% of 200 = 88

Simplify the expression and find the value of 'x'

35% of 500 of 18 ÷ 21 = x