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CBSE Class 8 Answered

Find the square of the number 986 using diagonal method.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
answered-by-expert Expert Answer

Using diagonal method, we have

From above, we have 6-digit square number which is obtained as below:

6th digit = 6

5th digit = 4 + 3 + 4 = 11 (1 carry forward)

4th digit = 8 + 5 + 1 + 5 + 8 + 1 = 28 (2 carry forward)

3rd digit = 4 + 2 + 8 + 2 + 4 + 2 = 22 (2 carry forward)

2nd digit = 7 + 4 + 7 + 2 = 20 (2 carry forward)

1st digit = 6 + 2 = 8

Hence, the required number is 802816.

Answered by | 04 Jun, 2014, 03:23: PM
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