A five digit number is formed by using digits 1 2 3 6 9
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Answer:
Sum = 6666600
Total of diff numbers possible = 5! --> 5*4*3*2*1 = 120
Smallest no = 13579
Largest no = 97531
Average of 120 numbers =(13579+97531)/2
Sum of 120 nos = 111110/2 * 120
= 111110*60
= 6666600
25*24( 10000+1000+100+10+1) = 600* 11111= 6666600
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