Reasoning - Number, Ranking & Time Sequence
11.
Nitin was counting down from 32. Sumit was counting upwards the numbers starting from 1 and he was calling out only the odd numbers. What common number will they call out at the same time if they were calling out at the same speed ?
Answer
Nitin : 32 31 30 29 28 27 26 25 24 23 22 21 20....
Sumit : 1 3 5 7 9 11 13 15 17 19 21 23 25....
Clearly, both will never call out the same number.
Answer :
Option DExplanation :
Nitin : 32 31 30 29 28 27 26 25 24 23 22 21 20....
Sumit : 1 3 5 7 9 11 13 15 17 19 21 23 25....
Clearly, both will never call out the same number.
12.
Thirty six vehicles are parked in a parking lot in a single row. After the first car there is one scooter. After the second car there are two scooters .After the third car there are three scooters and so on. Find the number of scooters in the second half of the row.
Answer
Let C and S denote car and scooter respectively.
Then, the sequence of parking is :
C S C S S C S S S C S S S S C S S S | S S C S S S S S S C S S S S S S S C
The above sequence has been divided into two equal halves by a line(|).
Clearly, numbers of scooters in second half of the row = 15.
Answer :
Option CExplanation :
Let C and S denote car and scooter respectively.
Then, the sequence of parking is :
C S C S S C S S S C S S S S C S S S | S S C S S S S S S C S S S S S S S C
The above sequence has been divided into two equal halves by a line(|).
Clearly, numbers of scooters in second half of the row = 15.
13.
The letters L, M, N, O, P, Q, R, S and T in their order are substituted by nine intergers 1 to 9 but not in that order. 4 is assigned to P. The difference between P and T is 5. The difference between N and T is 3. What is the integer assigned to N ?
Answer
P = 4 and T − P = 5 ⇒ T = 9.
T − N = 3 ⇒ 9 − N = 3
⇒ N = 6
Answer :
Option CExplanation :
P = 4 and T − P = 5 ⇒ T = 9.
T − N = 3 ⇒ 9 − N = 3
⇒ N = 6
14.
If the first and second digits in the sequence 5 9 8 1 3 2 7 4 3 8 are interchanged. Also the third and fourth digits, the fifth and sixth digits and so on, then which digit would be the seventh counting to your left from the last digit?
Answer
After interchanges new sequence becomes 9 5 1 8 2 3 7 4 8 3.
Then counting to the left, the seventh number is 8.
Answer :
Option DExplanation :
After interchanges new sequence becomes 9 5 1 8 2 3 7 4 8 3.
Then counting to the left, the seventh number is 8.
15.
How many even numbers are there in the following sequence of numbers whiich are immediately followed by an odd number as well as immediately preceded by an even number ?
8 6 7 6 8 9 3 2 7 5 3 4 2 2 3 5 5 2 2 8 1 1 9
Answer
8 6 7 6 8 9 3 2 7 5 3 4 2 2 3 5 5 2 2 8 1 1 9
Answer :
Option CExplanation :
8 6 7 6 8 9 3 2 7 5 3 4 2 2 3 5 5 2 2 8 1 1 9
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