Question

Sheela has a Problem . She has to write the number 100 exactly. but she has only the digit 9 at her disposal .how she can use it to complete her task?

Answer 1

she can do it like this-

$99 + (9 \div 9)$

Answer 2

9 * 9 + 9 + 9 + 9/9 = 100
99 + 99 / 99 = 100
(99 + 9/9) * 9 / 9 = 100
(99 + 9/9) + 9 - 9 = 100
(9 + 9/9) * (9 + 9/9) = 100
(999 - 99) / 9 = 100
99 / 9 * 9 + 9 / 9 = 100
(99 + 9/9) / (9 / 9) = 100

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