The number of numbers between 74 and 25556 divisible by 5 is

- a)5090
- b)5097
- c)5095
- d)none of these

Correct answer is option 'B'. Can you explain this answer?

Related Test: Test: Arithmetic And Geometric Progressions - 1

By
Seaba Babu
·
Oct 11, 2020 ·CA Foundation

3 Answers

Mayank Sharma
answered
Nov 23, 2018

Let a be the first term and d be the common difference.

First term a = 75.

Common difference = 5

Last term an = 25555.

We know that number of terms of an AP an = a + (n - 1) * d

25555 = 75 + (n - 1) * 5

25555 = 75 + 5n - 5

25555 = 70 + 5n

25485 = 5n

n = 5097.

Therefore there are 5097 numbers between 74 and 25556 divisible by 5.

Ann Maria Sunil
answered
Sep 22, 2020

Answer =5097

A=75,last term=25555,d=5

We know that

25555=75+(n-1)5

(n-1)5=25555-75

n-1=25480Ã·5

n-1=5096

n=5097

A=75,last term=25555,d=5

We know that

25555=75+(n-1)5

(n-1)5=25555-75

n-1=25480Ã·5

n-1=5096

n=5097

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