Question

find the least number which must be subtracted from each of the following so as to get a perfect square also find the square root of the perfect square s o obtained
402
1989
3250
825
4000​

Answer 1

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8th

Maths

Squares and Square Roots

Square Root of Non Perfect Squares

Find the least number which...

MATHS

Find the least number which must be subtracted from each of the following numbers so as to get a perfect square Also find the square root of the perfect square so obtained 

(i)402,(ii)1989,(iii)3250,(iv)825,(v)4000

A

Least number which must be subtracted:(i)2,(ii)22,(iii)1,(iv)21,(v)52

Square root of the perfect square:

(i)20,(ii)34,(iii)55,(iv)26,(v)67

B

Least number which must be subtracted:(i)2,(ii)53,(iii)1,(iv)41,(v)31

Square root of the perfect square:

(i)20,(ii)44,(iii)57,(iv)28,(v)63

C

Least number which must be subtracted:(i)6,(ii)22,(iii)50,(iv)31,(v)40

Square root of the perfect square:

(i)19,(ii)41,(iii)49,(iv)27,(v)65

D

Least number which must be subtracted:(i)8,(ii)41,(iii)12,(iv)56,(v)4

Square root of the perfect square:

(i)19,(ii)22,(iii)37,(iv)26,(v)61

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ANSWER

For 402

Nearest perfect square is 400

400 = 20

402 − 400 = 2

For