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What could be the possible'ones' digits …

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What could be the possible'ones' digits of the square root of each of the following number (1) 9801 (2) 99856 (3) 998001 (4) 657666025

Posted by Taniya Thingnam 4 years ago

Teacher Exams > CTET and State TET > English Language

1 answers

Yogita Ingle 4 years ago

The possible digit at one’s place of the square root of:

(i) 9801 can be 1 or 9.

( ∵ 1 x 1 = 1 and 9 x 9 = 81)

(ii) 99856 can be 4 or 6.

( ∵ 4 x 4 = 16 and 6 x 6 = 36)

(iii) 99001 can be 1 or 9

( ∵ 1 x 1 = 1 and 9 x 9 = 81)

(iv) 657666025 can be 5.

( ∵ 5 x 5 = 25)

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