4. A number of whales were asked about things that they dislike
1 answer:
Answer:
A. 38
B. 33
C. 13
D. 23
Step-by-step explanation:
The attached table shows my take on the interpretation of the given numbers. You will note that -2 appears in the combination (dislikes Squids; doesn't dislike Ahab or Pollution).
If we take the letters in the order APS for Ahab, Pollution, Squids, and use D for Dislike and L for Like (doesn't dislike), then the statements get interpreted here as follows:
19 dislike giant squids: DDD +DLD +LLD +LDD = 19
6 dislike S and P and A: DDD = 6
24 dislike A: DDD +DLD +DDL +DLL = 24
1 dislike P but not S or A: LDL = 1
11 dislike A and S: DDD +DLD = 11
3 dislike P and A but not S: DDL = 3
20 dislike pollution: DDD +LDD +DDL +LDL = 20
5 have no dislikes: LLL = 5
Starting with the single-cell numbers DDD, LDL, DDL, LLL, you can next fill in the cell value that gives the double cell sum, then the values for quadruple-cell sums (19 will be last).
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A. The total number of whales surveyed is the total of all the numbers in the cells: 38.
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B. The number that dislike at least 1 is the complement of the number that dislike none, so is 38-5 = 33.
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C. This is DDL +DLL = 3+10 = 13.
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D. This is the number that dislike squids (19) plus the number that dislike pollution (1 + 3), for a total of 23.
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Answer:
The meet at first time at starting point after 336 seconds,
Vanu have completed 7 laps while Tanuj has completed 6 laps.
Step-by-step explanation:
Given that Venu and Tanuj take 48 seconds and 56 seconds to
complete a lap respectively.
To meet them again at the startiong point, the time taken must be multiple of 56 and 48.
So, the minimum time required to meet them again at the startiong point is time taken for first time meet.
Time taken to first time meet is the smallest number which can be divided by 56 and 48, i.e the lowest common factor (LCM) of 56 and 48 which is 336 seconds or 5 minutes 36 seconds.
Number of laps by Venu
Number of laps by Tanuj