Question
The total number of students in a school is 21980. If
the ratio of boys to the girls in the school is 70:87 respectively, then find the total number of girls in the school.Solution
Boys: Girls = 70 : 87 Total number of students = 21980 Number of girls = [87/(70+87)] × 21980 = 12180
A sequence {Sₙ} is defined by:
Condition I: S₁ = 3 and for all n ≥ 2, Sₙ = 2·Sₙ₋₁ + (−1)ⁿ.
Condition II: The second ter...
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