The average of 5 consecutive numbers A,B,C,D and E is 48. What is the product of A and E ?
(a) 2162 (b) 2208 (c) 2024 (d) 2300 (e) None of these
Answered Feb 05, 2023
(d) Let the five consecutive numbers be x, x+1, x+2, x+3 and x+4 respectively.
Then, according to the question,
x + x + 1 + x + 2 + x + 3 + x + 4 = 5 × 48
or 5x +10 = 5 × 48
or 5 (x + 2) = 5 × 48
or x + 2 = 48
or x = 48 - 2 = 46
A = x = 46
and E = x + 4 = 46 + 4 = 50
A × E = 46 × 50 = 2300
Let the four consecutive numbers in AP be (a - 3d), (a - d), (a + d) and (a + 3d) So, according to the question. a-3d + a - d +...
(b) A + A + 2 + A + 4 + A + 6 = 180 4A + 12 = 180 A = 42. Next four consecutive even numbers are 50 + 52 +...
(a) According to the question, x + x + 2 + x + 4 + x + 6 + x + 8 = 140 or, 5x + 20 = 140 or, 5x =...
(d) Lowest number of set A = 280/5 – 4 = 52 Lowest number of other set = 52 × 2 – 71 = 33 Required sum = 33 + 34...
(a) Assume the third number = x According to question 2 × 280 + x + 178.5 × 2 = 281 × 5 or, 560 + x + 357 = 1405 or, x +...
(e) Let A = x According to the question x + x +1 + x + 2 + x + 3 + x +4 = 5 × 48 5x + 10 = 240 ⇒ 5x...
Difference between two consecutive odd numbers is 2. ∴ If smallest odd number be x. Then next consecutive odd numbers are x+2,x+4,x+6 and x+8.
(e) Third number = 290 – (48.5 × 2) – (53.5 × 2) = 290 – 97 – 107= 86
(d) Third number = (436 × 5) – (344 × 2 + 554 × 2) = 2180 – 1796 = 384
L TPL AP = TP/L MP = TPn -TPn - 1 0 0 0 - 1 15 15 15 2 35 17.5 20 3 50 16.67 15 4 40 10 -10 5 48 9.6 -8
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