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A litt serves floors 1 through 16, moving one floor every 12 seconds. It walts 48 seconds at both endpoints. It can complete how many round trips from 9.00 AM to 3: 20 AM?

A46

B48

C50

D52

উত্তর : C.

শেয়ার :

সম্পর্কিত প্রশ্ন সমূহ

১.

How many positive divisors of 7200 are perfect squares?

B10

C12

D15

২.

For $x > 0$ , what is the minimum value of $x\:+\:\frac{16}{x}$ =?

C12

D16

৩.

A cistern is normally filled in 6 hours, but a leak makes it take 8 hours. How long would the leak alone take to empty a ful cistern?

A24 hours

B30 hours

C36 hours

D48 hours

৪.

Nasif's watch gains 4 minutes per hour. It was correct at 2:00 pm yesterday. When it displays 6:00 am today. What is the accurate time?

4 : 00 am

4 : 30 am

5 : 00 am

5 : 30 am

৫.

ab is negative and $a² + b²$ is greater than o, but less than 114. What is the minimum value of ab?

$-45$

$-48$

$-49$

$-56$

৬.

If positive integers m and n satisfy $m + n < 10$ , how many distinct values can mn assume?

A16

B17

C18

D20

৭.

Find the smallest positive integer that leaves remainder 3 when divided by 7, remainder 4 when divided by 9, and remainder 8 when divided by 11.

A256

B283

C361

D428

৮.

A circular garden's diameter has endpoints at coordinates (2, 3) and (8, 11). Find its area in terms of π.

A100π

B50π

C25π

D10π

৯.

Nasrin and Farid can finish a project in 12 and 18 days. They work together for 4 days, then Nasirin leaves. How many more days does Farid need?

A6 days

B8 days

C12 days

D13 days

১০.

In a factory, yield drops 10% each stage: cutting, sewing, finishing. To ship 729 flawless:, shirts, how many starting materials (in shirts) are needed?

A867

B1000

C1458

D1800