Question bank/JEE Main/Mathematics
JEE MainMathematicsToughSequences and Series
7 1000 1
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Sequence is t_1 + t_2 + t_3 + t_4 +........
t_3 = t_1 + t_2; t_7 = 1000
t_1 = 1
but t_7 = t_1 + t_2 + t_3 + t_4 + t_5 + t_6
1000 = 2(t_1 + t_2 + t_3 + t_4 + t_5)
= 4(t_1 + t_2 + t_3 + t_4)
= 8(t_1 + t_2 + t_3)
1000 = 16(t_1 + t_2)
t_3 = t_1 + t_2; t_7 = 1000
t_1 = 1
but t_7 = t_1 + t_2 + t_3 + t_4 + t_5 + t_6
1000 = 2(t_1 + t_2 + t_3 + t_4 + t_5)
= 4(t_1 + t_2 + t_3 + t_4)
= 8(t_1 + t_2 + t_3)
1000 = 16(t_1 + t_2)
Source: Grass-G / M-03 Paper 1 Mathematics 21-8-2020_Final.docx
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