Shamita is very found of collecting greeting cards. Her collection 0f 211 cards has a good mix of Birthday cards, New year cards, Deepawali cards, Christmas cards and even a marriage anniversary cards. The number of Birthday card is equal to the sum of all other except the marriage anniversary card. The number of New year card is double of Deepawali card, which is turn is double of Christmas cards.
The number of Christmas cards is

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Solution

The correct option is B 15
If number of Christmas cards = x
Deepawali Card= 2x
New Year Card= 4x
Number of Birthday Cards= x + 2x + 4x= 7x
i.e. 7x + x + 2x + 4x + 1=211
14x=210
x=15

So Christmas Card= 2x
1 $\times$ 15=15

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The correct option is B 15If number of Christmas cards = x Deepawali Card= 2x New Year Card= 4x Number of Birthday Cards= x + 2x + 4x= 7x i.e. 7x + x + 2x + 4x + 1=211 14x=210 x=15 So Christmas Card= 2x 1 ×15=15

The correct option is B 15
If number of Christmas cards = x
Deepawali Card= 2x
New Year Card= 4x
Number of Birthday Cards= x + 2x + 4x= 7x
i.e. 7x + x + 2x + 4x + 1=211
14x=210
x=15

So Christmas Card= 2x
1 $\times$ 15=15