if 3¹ x¹ x² x² x⁴ 28 are in A.P., than x⁴ =?
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Step-by-step explanation:
a=3
6th term=28
a+5d=28
5d=28-3
5d=25
d=5
X⁴=a+4d
3+4(5)
3+20
=23
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