Mathematics questions

Questions

• Which one is the principle of inclusion/exclusion of two sets intersecting each other? — BPSC October 2026 – Written
• The amount of money held by A, B, and C satisfy A:B = 3:4 and B:C = 5:6. If A gives Tk 5,000 to B, the ratio of their amount becomes 1:2… — Combined Bank October 2026 – Written (BIBM)
• In a class, if 4 students sit on each bench, then 3 benches remain empty. But if 3 students sit on each bench, then 6 students have to… — Combined Bank October 2026 – Written (BIBM)
• The product of two consecutive positive odd numbers is 143. Find the numbers. — Combined Bank October 2026 – Written (BIBM)
• Pipe A can fill a tank in 10 hours and pipe B in 15 hours. Pipe C can empty the full tank in 12 hours. If all three are opened together… — Combined Bank October 2026 – Written (BIBM)
• In a survey of 500 people, 180 are smokers, 90 have lung cancer, and 54 are both smokers and diagnosed with lung cancer. Determine the… — BUET October 2026 – Written
• Between 7 and 8 o’clock, at what time will the hour and minute hands lie on the same straight line but point in opposite directions? — BPDB October 2026 – Written (BUET)
• A meeting is attended by several people, and everyone shakes hands with everyone else exactly once. If the total number of handshakes is… — BPDB October 2026 – Written (BUET)
• A group of ducks and goats is in a place. The total number of legs is 16 more than twice the total number of heads. How many goats are… — BPDB October 2026 – Written (BUET)
• Find the number of permutations of the word CARBON such that vowels must occupy odd positions. — BCIC February 2025 – Written (BUET)