R K Bansal Solutions for Chapter: Squares and Square Roots, Exercise 3: EXERCISE 3(C)

Check whether the following number will have $6$ at their unit places.

${43}^2$

Check whether the following number will have $6$ at their unit places.

${244}^2$

Evaluate:

${37}^2-{36}^2$

Evaluate:

${85}^2-{84}^2$

Evaluate:

${101}^2-{100}^2$

Without doing the actual addition, find the sum of:

$1+3+5+7+9+11+13+15+17+19+21+23$

Without doing the actual addition, find the sum of:

$1+3+5+7+9+-----+39+41$

Without doing the actual addition, find the sum of:

$1+3+5+7+9+----+51+53$