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प्रश्न
The number of ‘three digit numbers’ which are multiples of 9 are:
पर्याय
101
99
100
98
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उत्तर
100
Explanation:
Smallest and largest 3 digit number multiplied by 9 are 108 and 999
By AP
a = 108 an = 999 d = 9 n = ?
999 = 108n + (n − 1) 9
n = 100
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