Question

If the numbers 2 , 7 and k + 4 are in A.P. then the value of k is
(a) 6
(b) 7
(c) 10
(d) 8​

Answer 1

Answer:

b.7 value of k is 7

Step-by-step explanation:

k =7value

Answer 2

★Since the given numbers are in AP, the difference between two consecutive terms(common difference) must be constant.

Hence, 7 - 2 = k + 4 - 7

=> 5 = k - 3

=> k = 8

★ Additional Information:

• nth term of an ap with first term a nad common difference d is given by a+(n-1)d.
• Sum of n terms of an ap with first term a and common difference d is given by (n/2)[a + (n-1)d].