Subject :IMO Class : Class 3
Subject :IMO Class : Class 7
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Subject :IMO Class : Class 8
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Subject :IMO Class : Class 8
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Subject :IMO Class : Class 8
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Subject :IMO Class : Class 9
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Subject :IMO Class : Class 9
Ans 1:
Class : Class 9
Answer is 81 as you will add the multiples of 5 after each no.
6+5=11
11+10=21
21+15=36
36+20=56
56+25=81
Ans 3:
Class : Class 9
Answer is 81 as you will add the multiples of 5 after each no.
6+5=11
11+10=21
21+15=36
36+20=56
56+25=81
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Subject :IMO Class : Class 9
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Subject :IMO Class : Class 6
Ans 3:
Class : Class 9
but the problem is that a) says a parallelogram has no lines of symmetry, but very often it does.
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Subject :IMO Class : Class 6