trailing zeros Flashcards
1
Q
trailing zeros
A
no of 5 * 2 pairs in prime factorization of number
2
Q
any factorial greater than or equal to 5!
A
will always end in 0 because got 5 x 2 pair
3
Q
when given big numbers and need to find no of digits
A
1_ prime factorize no 2_count 2 x 5 pairs 3_take remaining unpaired 2s, 5s and other prime numbers and multiply them together 4_take no of digits from 3 5_add up digits from 2 and 4
4
Q
Leading zeros
A
Zeros after decimal point and before first non zero digit
5
Q
if 1/x and x is integer, to calculate no of leading zeros…
A
if 1
