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QUESTION
Q
What is the number of distinct terms in the expansion of (a + b + c)20 ?
Solution
Number of terms in the given expansion is nothing but the non-negative integral solutions of the equation
a + b +...
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Directions : Study the information carefully to answer the questions that follow. A school consisting of a total of 1560 students has boys and girls in the ratio of 7 : 5 respectively. All the students are enrolled in different types of hobby classes, viz., Singing, Dancing and Painting. One-fifth of the boys are enrolled in only Dancing classes. Twenty per cent of the girls are enrolled in only Painting classes. Ten percent of the boys are enrolled in only Singing classes. Twenty-four per cent of the girls are…
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