Manoj and Satya are ranked seventh and eleventh respectively from the top in a class of 31 students. What will be their respective ranks from the bottom in the class ?
Answer: A
Correct answer: 25th and 21st
In a class of 31, a rank of \( r \) from the top is \( 31-r+1 \) from the bottom. Manoj at 7 becomes \( 31-7+1 = \mathbf{25} \)th and Satya at 11 becomes \( 31-11+1 = \mathbf{21} \)st.
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The priest told the devotee, "The temple bell is rung at regular intervals of 45 minutes. The last bell was rung five minutes ago. The Next bell is due to be rung at 7:45am". At what time did the priest give this information to the devotee?
Answer: B
Correct answer: 7.05 am
The bells are 45 minutes apart, so the one before the 7:45 bell was rung at 7:00. That was five minutes earlier, which puts the conversation at \[ 7{:}00 + 5\text{ min} = \mathbf{7{:}05\ am} \]
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In the series given below , how many 8's are there each of which is exactly divisible by its immediate preceeding as well as succeeding numbers ?
2 8 3 8 2 4 8 2 4 8 6 8 2 8 2 4 8 3 8 2 8 6
Answer: C
Clearly, we may mark such sets of 3 numbers, in which the middle number is 8 and each of the two numbers on both sides of it is a factor of 8, as shown below :
2 8 3 8 2 4 8 2 4 8 6 8 2 8 2 4 8 3 8 2 8 6
So, there are two such 8's. Hence the answer is C.
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Aruna ranks twelfth in a class of forty-six. What will be her rank from the last?
Answer: C
Correct answer: 35
In a class of 46, a rank of 12 from the top is \[ 46 - 12 + 1 = \mathbf{35} \] from the bottom.
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P, Q, R, S, T, U, V and W are sitting round the circle and are facing the centre:
P is second to the right of T who is the neighbour of R and V.
S is not the neighbour of P.
V is the neighbour of U.
Q is not between S and W. W is not between U and S.
Then Who is sitting opposite to U ?
Answer: B
Correct answer: P
Working the seating out from the conditions - P second to T’s right, T between R and V, S away from P, and V beside the remaining pair - the arrangement comes out uniquely, and the seat asked about is P’s.
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How many 7’s are there in the following series which are not immediately followed by 3 but immediately preceded by 8?
8 9 8 7 6 2 2 6 3 2 6 9 7 3 2 8 7 2 7 7 8 7 3 7 7 9 4
Answer: C
Correct answer: 2
Two 7s have an 8 immediately before them and something other than 3 after them: 8 7 6 and 8 7 2. The 7 in 8 7 3 is ruled out by the 3 that follows. So there are 2.
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How many such pairs of digits are there in the number 421579368 each of which has as many digits between them in the number as when they are arranged in ascending order?
Answer: D
Correct answer: Three
Writing 421579368 in ascending order gives 123456789, and comparing the two, three pairs of digits keep the same number of digits between them in both arrangements. So the answer is three.
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In a row, Kumar is at 7th place from the left and Pawan is at 9th place from the right. When they interchange the positions Kumar becomes 11th from left. How many were seated in the row ?
Answer: A
Initialy from left 7th = kumar
from right 9th = pawan
Interchange kumar = 11th from left, from right kumar = 9th;
11+8 = 19;
8 is 1,2,3,4,5,6,7(pawan),8,9,10,11(kumar),12,13,14,15,16,17,18,19;
simply count the 9th place from right we will get total as 19.
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In a row of 74 girls, Shweta is 27th from left end. Palak is 7th to the right of Shweta. What is Palak's position from the right end of the row?
Answer: B
Correct answer: 41
Palak stands seven places to the right of Shweta’s 27th, so she is 34th from the left. In a row of 74 that makes her \[ 74 - 34 + 1 = \mathbf{41} \text{st from the right} \]
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In the following set of numbers, if 1 is added to the last digit and then the orderr of digits is reversed, which number will be fourth if arranged in ascending order?
567 284 696 865 738
Answer: A
Here the given numbers are
567 284 696 865 738
When 1 is added to the last digit of each of the above numbers, it becomes as follows :
568 285 697 866 739
After reversing the order of digits , we get
865 582 796 668 937
Now , when the numbers are arranged in ascending order their order becomes as follows:
582 668 796 865 937
Hence , the fourth number is 865 (a number formed by 567). Therefore option(1) is correct answer.
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