Question

समांतर श्रेणी A,7,B,23,C हो तो ABC का मान ज्ञात कीजिए​

Answer 1

Step-by-step explanation:

A,7,B,23,C

3 term a,b,c be in ap then 2b=a+c

7,B,23 is in ap

2B= 23+7

2B=30

B=15

B,23,C is in ap

15,23,C is in ap

23×2= C+15

46= C+15

31=C

A,7,B in ap

A,7,15 is in ap

7×2= A+15

14=A+15

-1=A

hence A=-1, B=15, C=31

#666