Question

complete the following activity to find the number of terms in the A.P.1,3,5,...,149.​

Answer 1

Answer:

The number of terms is 75

Step-by-step explanation:

a=1

d=3-1=2

149=1+(n-1)2

148=(n-1)2

74=n-1

75=n

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Answer 2

Answer:

Step-by-step explanation:

a = 1

a2- a1 = 3-1= 2

D= 2

An = a + (n-1)d

149 = 1+ (n-1) 2

149-1 = (n-1) 2

148/2 = n-1

74= n-1

74+1=n

n = 75

:: therefore their are 75 term in the AP.

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