Question

Which of the following numbers will have 6 at their unit's place :

(i) ${26}^2$ (ii) ${49}^2$

(iii) ${34}^2$ (iv) ${43}^2$

(v) ${244}^2$

Answer 1

The following numbers have 6 at their units place s $(4{)}^2=16,(6{)}^2=36$ has 6 at their units place ${26}^2,{34}^2,{244}^2$

i.e., (i), (iii) and (v)