1.

QUI1.Solve the following:[2]Find the common dilference of following sequence and starewhether ù is an A.P or not.7. 11. 15. 19, 23 .....​

Answer»

<P>T1=7, t2=11, T3=19, t4=23

d=T2-T1= 11-7=4

d=t3-t2= 15-11=4

d=t4-t3= 23-15= 4

The COMMON DIFFERENCE is 4

This is a A. P



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