The sum of 4th and 8th of an AP is 48 and the sum of the 6th and 9th term is 60. find the first four terms of the AP
give the correct answer and I will mark you as a brainlist
Answers
Answered by
0
The formula for nth term (Tn)= a+(n-1)d
According to question,
a+3d+ a+7d =48
2a+10d=48(eq.1)
a+5d+a+8d=60
2a+13d=60(eq.2)
subtracting eq.2 from eq.1 we get,
d=4
substituting value in eq.1 we get,
2a+40=48
2a=8
a=4
a=4(First term)
a+d=4+4=8(second term)
a+2d=4+8=12(third term)
a+3d=4+12=16(fourth term)
Similar questions