Question 14 Real Numbers Exercise 1B
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Answer:
Prime factors of 4, 7 and 13
4 = 2x2
7 and 13 are prime numbers.
LCM ( 4, 7, 13) = 364
We know that, the largest 4 digit number is 9999
Step 1: Divide 9999 by 364, we get
9999/364 = 171
Step 2: Subtract 171 from 9999
9999 - 171 = 9828
Step 3: Add 3 to 9828
9828 + 3 = 9831
Therefore 9831 is the number.
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