Subject :ICSO Class : Class 5
Subject :ICSO Class : Class 6
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Subject :ICSO Class : Class 6
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Subject :ICSO Class : Class 4
Ans 3:
Class : Class 4
ANWESHA I think that you are not an Indian . Because you are asking such silly questions sorry for being rude
Ans 9:
Class : Class 9
Don't you know even that! Are you an Indian ? Sorry, for being rude but I will tell you the answer------ Mohandas Karamchand Gandhi
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Subject :ICSO Class : Class 7
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Subject :ICSO Class : Class 10
Ans 4:
Class : Class 10
Sum of n terms - First Term = 99 |
0.5 * n * [2a + (n-1)d] - a = 99 |
0.5 * 10 * [2a + 9d] - a = 99 |
10a + 45d - a = 99 |
9a + 45d = 99 |
a + 5d = 11 --> Eq 1
|
First Term + Fifth Term = 10 |
a + a + 4d = 10 |
2a + 4d = 10 |
a + 2d = 5 |
a = 5 - 2d --> Eq 2
|
On Substituting Eq 2 in Eq 1 |
5 - 2d + 5d = 11 |
5 + 3d = 11 |
3d = 6 |
d = 2 |
|
On Substituting d = 2 in Eq 2 |
a = 5 - 4 |
a = 1 |
|
Third term =
a + 2d =
1 + 4 =
5
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Subject :ICSO Class : Class 4
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Subject :ICSO Class : Class 7
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Subject :ICSO Class : Class 5
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Subject :ICSO Class : Class 4