ਜੇ 21y5, 9 ਦਾ ਇੱਕ ਗੁਣਜ ਹੈ ,ਇੱਥੇ y ਇੱਕ ਅੰਕ ਹੈ , ਤਾਂ y ਦਾ ਮੁੱਲ
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Step-by-step explanation:
Given ਜੇ 21y5, 9 ਦਾ ਇੱਕ ਗੁਣਜ ਹੈ ,ਇੱਥੇ y ਇੱਕ ਅੰਕ ਹੈ , ਤਾਂ y ਦਾ ਮੁੱਲ
- Given if 21y5 is a multiple of 9, where y is a digit, what is the value of y.
- Now we need to apply the divisibility rule for 9.
- So 2 + 1 + y + 5 should be divisible by 9
- So we get 8 + y / 9
- So the possible value of y can be 1, so we get 9/9 = 1
- Now any other value that y can take will be 10,so that 18 / 9 = 2 but it is a double digit and is not possible.
- Therefore the only possibility that y can take will be y = 1.
Reference link will be
https://brainly.in/question/3049226
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