`6824+7864=? xx 40`

8282 + 2828 = ? xx 40

8648-7652=?xx40

3596-2832+2040=?xx40

8059-7263=?xx40

Find the product 37256 xx 25 xx 40 .

Fill in the blanks to make each of the following a true statement: 58 xx 46 = 58 xx 40 + 58 xx ..............

Determine the product by suitable arrangement: 275 xx 5 xx 40

The sum 2 xx ""^(40)C_(2) + 6 xx ""^(40)C_(3) + 12 xx ""^(40)C_(4) + 20 xx ""^(40)C_(5) + "…." + 1560 xx ""^(40)C_(40) is divisible by

The sum 2 xx .^(40)C_(2) + 6 xx .^(40)C_(3) + 12 xx .^(40)C_(4) + 20 xx .^(40)C_(5) + "…." + 1560 xx .^(40)C_(40) is divisible by