Question

Find the square of the number containing 5 in units place for 125
Please guys do it fast

Answer 1

Hlo mate here is ur ans......

15

1595

1595105

1595105205

(15)2 ===>1*(1+1)*100+25

(15)2 ===>1*(1+1)*100+25 ===>1*2*100+25

(15)2 ===>1*(1+1)*100+25 ===>1*2*100+25 ====>200+25 = 225

(15)2 ===>1*(1+1)*100+25 ===>1*2*100+25 ====>200+25 = 225(95)2 ===>9*(9*1)*100+25

(15)2 ===>1*(1+1)*100+25 ===>1*2*100+25 ====>200+25 = 225(95)2 ===>9*(9*1)*100+25 ====>9000+25 = 9025

(15)2 ===>1*(1+1)*100+25 ===>1*2*100+25 ====>200+25 = 225(95)2 ===>9*(9*1)*100+25 ====>9000+25 = 9025(205)2===>20*(20+1)*100+25

(15)2 ===>1*(1+1)*100+25 ===>1*2*100+25 ====>200+25 = 225(95)2 ===>9*(9*1)*100+25 ====>9000+25 = 9025(205)2===>20*(20+1)*100+25

(15)2 ===>1*(1+1)*100+25 ===>1*2*100+25 ====>200+25 = 225(95)2 ===>9*(9*1)*100+25 ====>9000+25 = 9025(205)2===>20*(20+1)*100+25 ===>20*21*100+25 = 42025

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