Question
If the first term of the arithmetic progression is 18,
the common difference is 5, and the number of terms in the series are 40, then find the sum of the series.Solution
First term (a) = 18 Common difference (d) = 5 Number of terms (n) = 40 Required sum = (n/2) {2a + (n – 1) × d} = (40/2) × {2 × 18 + (40 – 1) × 5} = 20 × (36 + 39 × 5) = 20× (36 + 195) = 20 × 231 = 4620
If 'A @ B' means 'A is the daughter of B'. 'A & B' means 'A is the husband of B'. 'A % B' means 'A is the wife of B'. 'A $ B' means 'A is mother of B'....
If "G @ P & I % W & V # Q & K * M" is definitely true, then how is W related to K?
Statements : R < Q ≤ T > S = V, D < F ≤ Q
Conclusions : I. T > D II. F < R
‘W + X’, means ‘W is the sister of X’
‘W - X’, means ‘W is the daughter of X’
‘W × X’, means ‘W is the brother...
If F & G $ I @ H % J is true then how is F related to J?
'A@B' means 'A is the father of B'. 'A#B' means 'A is the sister of B'. 'A$B' means 'A is the brother of B'. 'A%B' means 'A is the wife of B'.
If...
'A # B' means 'A is the mother of B'. 'A & B' means 'A is the spouse of B'. 'A % B' means 'A is the sister-in-law of B'. If F # E, D & F, B % F, A & C #...
‘A × B’ means ‘A is the brother of B’.
‘A − B’ means ‘A is the mother of B’.
‘A ÷ B’ means ‘A is the father of B...
In expression ‘X $ U & V @ P # Q % R $ S & T’ who is the only daughter of V?
If L is mother of M’s father then which of the following is true?
