How many positive two-digit whole numbers are divisible by 7?
How many positive two-digit whole numbers are divisible by 7?
Answer/Solution
13
Steps/Work
The largest two-digit number that is a multiple of 7 is 7x14 = 98.
Thus, there are 14 positive multiples of 7 that are less than 100.
However, this includes 7x 1 = 7 which is not a two-digit number.
Therefore, there are 14 -1 = 13 positive two-digit numbers which are divisible by 7.
(Note that these 13 numbers are 14,21,28,35,42,49,56,63,70,77,84,91 and 98.)
correct answer E
Thus, there are 14 positive multiples of 7 that are less than 100.
However, this includes 7x 1 = 7 which is not a two-digit number.
Therefore, there are 14 -1 = 13 positive two-digit numbers which are divisible by 7.
(Note that these 13 numbers are 14,21,28,35,42,49,56,63,70,77,84,91 and 98.)
correct answer E