किसी समान्तर सरेड़ी के 7 पदों का योग 10 है, और उसके अगले 7 पदों का योग 17 है ; श्रेणी ज्ञात कीजिये ।
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rakeshmohata:
is the answer 1, 8/7, 9/7 ,10/7
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Hay dear user
it's ur answer
T7 = a + 6d
10 = a + 6d ........(1)
T14 = a + 16d
17 = a + 16d....... (2)
समीकरण 1 वा 2 से -
10 = a + 6d
17 = a + 16d
___________
7 = 10 d
=> d = 7/10
d का मान समीकरण एक में रखने पर
10 = a +16 × 7/10
10 = a +56/5
a = 10+56/5
तब श्रेणी T1 = 106/5,
T2 = a +2d
T3 = a + 3d
106/5,24,127/5...........Tn
I hope it's help you
Regards : @Swarnimkumar21###
it's ur answer
T7 = a + 6d
10 = a + 6d ........(1)
T14 = a + 16d
17 = a + 16d....... (2)
समीकरण 1 वा 2 से -
10 = a + 6d
17 = a + 16d
___________
7 = 10 d
=> d = 7/10
d का मान समीकरण एक में रखने पर
10 = a +16 × 7/10
10 = a +56/5
a = 10+56/5
तब श्रेणी T1 = 106/5,
T2 = a +2d
T3 = a + 3d
106/5,24,127/5...........Tn
I hope it's help you
Regards : @Swarnimkumar21###
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