the 4th term of A. P is 15th and its 12th term is 47 find the common difference
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Answer:
a4=15
a12=47
a4=a +[n-1]d
15=a+3d
a=15-3d...................................[1]
a12=a+[n-1]d
47=a+11d
put [1] here
47=15-3d +11d
47 =15+8d
d=4
Step-by-step explanation:
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