two APs have the same comman difference the first term of one of these is - 1 and that of the other is - 8 the difference between their 4th term is?
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i hope it will help you
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gokulchief:
It can be also -7
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Answer:
Step-by-step explanation:
A.P1 = -1,(-1+d).....
A.P2 = -8,(-8+d).....
a4 = a+3d
Difference between their 4th term ;
= (-8+3d)-(-1+3d)
= -8+3d+1-3d
= -8+1
= -7
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