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Q.

Find all the multiples of 9 up to 100.


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a

9,18,27,36,45,54,63,72,81,90,99

b

54,63,72,81,90,99

c

9,15,27,36,45

d

None of these 

answer is A.

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Detailed Solution

Concept- Multiplication table of 9 will help us solve this question. We will multiply every natural no. with 9 unless we get over the digit 100. That will help us solve this question.
9 multiplied by 1 gives, 9×1=9.
9 multiplied by 2 gives, 9×2=18.
9 multiplied by 3 gives, 9×3=27.
9 multiplied by 4 gives, 9×4=36.
9 multiplied by 5 gives, 9×5=45.
9 multiplied by 6 gives, 9×6=54.
9 multiplied by 7 gives, 9×7=63.
9 multiplied by 8 gives, 9×8=72.
9 multiplied by 9 gives, 9×9=81.
9 multiplied by 10 gives, 9×10=90.
9 multiplied by 11 gives, 9×11=99.
9 multiplied by 12 gives, 9×12=108.
Now we can see that 9×12.
gives 108 which is greater than 100.
Hence, the correct option is 1.
 
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