সমন্বিত ৭ ব্যাংক অফিসার ক্যাশ

51. The average of five consecutive integers is X. If the next two numbers are added, how shall the average vary?

• ক. It shall increase by 1
• খ. It shall increase by 1.4
• গ. It shall increase by 2
• ঘ. It shall remain the same

52. A clock seen through a mirror, shows quarter past three. What is the correct time shown by the clock?

• ক. 3:15
• খ. 7:15
• গ. 8:45
• ঘ. 9:45

53. A school has only the classes having 20, 30 and 40 students respectively. The percentages of students passed are 30%, 50% and 60% respectively. The percentage of passed students in the entire school is-

• ক. ৩৫
• খ. 40
• গ. 45
• ঘ. 50

54. If a 240-metre-long metro rail passes a pole in 24 seconds, how long will it take to pass a 650-metre-long platform?

• ক. 60 seconds
• খ. 75 seconds
• গ. 89 seconds
• ঘ. 130 seconds

55. The daily rate for a hotel room that sleeps 4 people is Tk. 390 for one person and X taka for each additional person. If 3 people take the room for one day and each pays Tk 210 for the room, then what is the value of X?

• ক. 60
• খ. ১২০
• গ. 80
• ঘ. ২৪০

56. The value of a machine is Tk.6250. Its value decreases by 10% during the first year, 20% during the second year and 30% during the third year. What will be the value of the machine after 3 years?

• ক. ২৬৫০
• খ. ৩০৫০
• গ. 3150
• ঘ. ৩৭৫০

57. The average temperature for the first 4-days of a week is 40,2º C and that of the last 4-days is 41.3°C. If the average temperature for the whole week is 40.6° C, then temperature on the fourth day is -

• ক. 38.5 ° C
• খ. 41.8° C
• গ. 41.3°C
• ঘ. 40.8° C

58. If the radius of a circle is increased by 100%, by what % is the area of the circle increased?

• ক. 100%
• খ. 200%
• গ. 300%
• ঘ. 400%

59. What would be the measure of the perimeter of a square whose area is equal to 256 square cm?

• ক. 16 cm
• খ. 36 cm
• গ. 64 cm
• ঘ. 128 cm