Two bats three ballsand fourcaps cost 46₹ . Threebats one ball and six caps cost 62₹ .Find the cost of each ball?
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Answer:
r=−
2
1
S
10
=
1−r
a(1−r
10
)
S
10
=
1+
2
1
96
⎝
⎛
1−(−
2
1
)
10
⎠
⎞
=96×
3
2
×(
2
10
2
10
−1
)
=64(
2
10
2
10
−1
)
=
2
4
2
10
−1
=
16
1023
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