879
1800
875
o.875
It is: 5*5*5*7 = 875
875
They are: 5*5*5*7 = 875
875
3500 ÷ 4 = 875
The three numbers are ±15, ±17 and ±19. ±152 + ±172 + ±192 = 875.
4/9=.444 7/8=.875 .444/.875=.5079=32/63
Clearly, (2272 - 875) = 1397, is exactly divisible by N. Now, 1397 = 11 x 127 The required 3-digit number is 127, the sum of whose digits is 10.
The first four prime numbers after 875 are: 877, 881, 883, 887