Playing with Numbers
Check what the result would have been if sundaram had chosen the numbers shown below. 1. 27 2. 39 3. 64 4. 17
1. Chosen number = 27
Number with reversed digits = 72
Sum of the two numbers = 27 + 72 = 99
Now, 99 = 11[9]
= 11[2 + 7]
= 11(Sum of the digits of the chosen number)
2. Chosen number = 39
Number with reversed digits = 93
Sum of the two numbers = 39 + 93 = 132
Now, 132 + 11 = 12
i,e, 132 = 11[12]
= 11 [ 3 + 9]
= 11 [ Sum of the digits of the chosen number]
3. Chosen number = 64
Number with reversed digits = 46
Sum = 64 + 46 = 110
Now, 110 = 11[10]
= 11[6 + 4]
= 11[ Sum of the digits of the chosen number
4. Chosen number = 17
Number with reversed digits = 71
Sum = 17 + 71 = 88
Now, 88 = 11[8]
= 11[1+7]
= 11[Sum of the digits of the chosen number]
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Check the divisibility by 21436587 by 9.
Check the divisibility of 152875 by 9.
If the three digit number 24x is divisible by 9, what is the value of x?
Check the divisibility of 2146587 by 3.
A B
+ 3 7
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3 7
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