alleryਇੱਕ ਦੋ-ਅੰਕੀ ਸੰਖਿਆ 4 ਇਸਦੇ ਅੰਕ ਜੋੜ ਦਾ ਗੁਣਾ ਹੈ; ਇਸਨੂੰ ਉਲਟਾਉਣ ਨਾਲ 27 ਜੋੜਦਾ ਹੈ। ਨੰਬਰ?
A36
B24
C48
D63
Answer & Solution
Correct answer: A. 36
ਦਸਾਂ a ਅਤੇ ਇਕਾਈਆਂ ਲਈ b, 10a + b = 4(a + b) b = 2a ਦਿੰਦਾ ਹੈ
9(b − a) = 27 ਨੰਬਰ ਦਿੰਦਾ ਹੈ 36।
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