12.75 = 12 and 3/4 = 51/4
1020 x 100 /1275 = Cancel down by '5' 1020 X 20 / 255 Cancel down by '5' again 1020 x 4 / 51 = 4080 / 51 = 80%
4/5 is the larger of those three fractions and it is equal to 0.8 ,17/23 is approximately equal to 0.739, while 51/68 is equal to 0.75, or three quarters.
sum of n natural number is n(n+1)/2 first 50 number sum is 50(50+1)/2 = 1275
12.75 = 1275/100. This can then be simplified by removing the common factor, 25, to give the answer 51/4.
Expressed in its simplest form, 51/68 is equal to 3/4 or three quarters.
because 12.75 x 4 = 51
12.75
The formula for the nth triangular number is n(n+1)/2. Therefore, the fourth triangular number is equal to 4 x (4+1) / 2 = (4 x 5) / 2 = 10. The fiftieth triangular number is equal to 50 x (50+1) / 2 = (50 x 51) / 2 = 1275.
12/51 = 4/17
51/48 = 3/4
51/68 = 3/4
It is because 51 divided by 2 is 25.5 and 25.5 divided by 2 is 12.75.