Ifab=45 and bc=1516 then c2-a2c2+a2 is-

A 17
B 725
C 34
D none of these

Correct Answer: 725

ab = 45.:. a:b = 4:5 = (4 × 3):(5 × 3) = 12:15 এবং bc = 1516 .:. b:c = 15:16 .:. a:b:c = 12:15:16 .:. c:a = 16:12⇒ ca = 1612 ⇒ c2a2 =  256144.:. c2 - a2c2 + a2 = 256 - 144256 + 144[বিয়োজন - যোজন করে পাই] = 112400 = 725
Bissoy MCQ
#গণিত #Sonali Bank Ltd #ডাটাবেস এ্যাডমিনিস্ট্রেটর - 30.11.2020

Related Questions

Kamal is shorter then Ruhan but teller then Anika. Runa is shorter then Kamal. Rubayet is shorter then Ruhan but teller then kamal. Who is tallest.
A Kamal
B Ruhan
C Anika
D Rina
A woman while shopping in a mall pushes her trolley 20 metres through an alley which is going East, then she turns to her left and walks 30 metres, then she turns West and walks another 30 metres, then she turns South and walks 30 metres and then she turns West and walks 25 metres. Where is she now with reference to her starting position?
A 35 metres West
B 5 metres West
C 35 metres East
D 5 metres East
A brother and sister leave home for school. The brother goes 0.5 km East, then turns right and goes 3.5 km and reaches his school. The sister goes 2.5 km North, then 1 km West, then turns left and goes 6 km and reaches her school. Where is the brother's school with respect to the sister's school?
A 0.5 km East
B 1.5 km West
C 0.5 km West
D 1.5 km East
Two workers X and Y start walking from the same place. X walks 65 m West, then turns left and walks 25 m. In the meanwhile Y walks 20 m North, then turns to his right and walks 35 m , then turns South and walks 45 m. Where is Y with respect to X?
A 30 m East
B 100 m West
C 100 m East
D 30 m West
A woman is returning from the city to her village. She walks 2 km North, then turns West and walks 5 km, then turns South and walks 2 km, then turns to her right and walks 7 km. Where is she now with reference to her starting position?
A 2 km West
B 12 km East
C 12 km West
D 2 km East
A helicopter flies 80 km North, then it turns West and flies 50 km, then it turns North and flies 120 km, then it turns to its right and flies 50 km. Where is it now with reference to its starting position?
A 40 km North
B 200 km South
C 40 km South
D 200 km North
A woman is shopping in a plaza. She walks 80 m South, then she turns East and walks 50 m, then she turns North and walks 110 m, then she turns to her left and walks 50 m. Where is she now with reference to her starting position?
A 30 m North
B 190 m North
C 30 m South
D 190 m South
Think of a number and then double the number, Add 6 and then multiply the number by 10. Now divide the number by 20, then subtract the number you first thought of, What is the result?
A 5
B 4
C 3
D 2
Think a number and then double the number. Then add 8 and multiply the result by 6. Now divide the result by 12, then subtract the number you first thought out. What u the final result?
A 4
B 6
C 10
D 14
P is heaver then B. R is thinner then A. P is thinner then R. Who is the heaviest.
A B
B P
C A
D R

Next steps