How many two digit positive integers are divisible by 7.
Answers
Answered by
3
Step-by-step explanation:
The 2-digit number divisible by 7 is 14, 21, 28, 35……98
The first 2-digit number which is divisible by 7 is 14
The last 2-digit number which is divisible by 7 is 98
The list of 2-digit numbers divisible by 7 are
14, 21, 28, 35……98 which forms an A.P
Consider a formula
T(n) = a + (n – 1)d
Where
a = 14
d = 7
T(n) = 98
98 = 14 + (n – 1)7
84 = 7n – 7
7n = 91
n = 13
∴ There are 13 two – digits number which are divisible by 7.
Hope it helps.
Answered by
0
Answer:
14 21 28 35 42 49 56 63 70 so this is the answer
Similar questions