# Bank PO Questions

Q:

fifteen persons are sitting around a circular table facing the centre. What is the probability that three particular persons sit together ?

 A) 3/91 B) 2/73 C) 1/91 D) 3/73

Explanation:

In a circle of n different persons, the total number of arrangements possible = (n - 1)!
Total number of arrangements = n(S) = (15 – 1)! = 14 !
Taking three persons as a unit, total persons = 13 (in 4 units)
Therefore no. of ways for these 13 persons to around the circular table = (13 - 1)! = 12!
In any given unit, 3 particular person can sit in 3!. Hence total number of ways that any three person can sit =
n(E) = 12! X 3!
Therefore P (E) = probability of three persons sitting together = n(E) / n(S) = 12! X 3 ! / 14!
= 12!x3x2 / 14x13x12! = 6/14x13 = 3/91

8 489
Q:

Calculate the angle between the two hands of clock when the clock shows 4 : 20 p.m. ?

 A) 5 degrees B) 10 degrees C) 15 degrees D) 25 degrees

Explanation:

Since at 4 : 20 the minute hand will be at 4 and the angle between them will be same as the distance covered in degree by the hour hand in 20 minutes.

Required angle = distance of hour hand = speed × time = $\inline \frac{1}{2}$ × 20 =10 degrees.

Filed Under: Clock puzzles
Exam Prep: Bank Exams , CAT , GATE , GRE
Job Role: Bank Clerk , Bank PO

4 489
Q:

The profit earned by selling an article for Rs.753 is equal to the loss incurred when the same article is sold for Rs.455.What should be the sale price for making 50% profit ?

 A) Rs.855 B) Rs.955 C) Rs.906 D) Rs.896

Explanation:

Let C.P =Rs. x

Then as given, (753 - x ) = (x - 455) $\inline \fn_jvn \Rightarrow$ 2x = 1208 $\inline \fn_jvn \Rightarrow$ x = 604

There fore S.P= 150% of 604 => Rs. $\inline \fn_jvn \frac{150}{100}\times 604$ = Rs.906

10 489
Q:

The Central Excise Day (CED) is celebrated on which date in India ?

 A) February 23 B) February 22 C) February 21 D) February 27

Explanation:

The Central Excise Day (CED) is celebrated every year on February 23 in India to commemorate the enactment of the Central Excise and Salt Act, 1944. The Central Excise officers all over the country celebrate this day by organizing seminars, workshops, trade interactions and cultural events etc.

Filed Under: General Awareness
Exam Prep: Bank Exams , CAT
Job Role: Bank Clerk , Bank PO

3 488
Q:

Shyam Walked 6 metres facing towards East, then took a right turn and walked a distance of 9 metres.He then took a left turn and walked a distance of a metres. How far is he from the starting point?

 A) 15 metres B) 21 metres C) 18 metres D) Cannot be determined

Explanation:

E-will be the midpoint of BC and AD

$\inline AE=\sqrt{6^{2}+(4.5)^2}$

and $\inline DE=\sqrt{6^{2}+(4.5)^2}$

AE = 7.5 and DE = 7.5

$\inline \therefore$ AD = 7.5 + 7.5 = 15m