(iv) 12,9,6,... या अंकगणिती श्रेढीचे 6 वे पद काढा.
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Step-by-step explanation:
here,,,
a=12,d=9-12= -3
t6=a+(n-1) d
t6=12+5×(-3)
t6=12-15
t6= -3
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