Question
A boy attended 5 lab evaluations, each having a total of
100 marks. His scores were 88, 76, 92, 81, and 70. He randomly reveals one of the scores to his friend. What is the probability that he reveals a score where he got more than 80% marks?Solution
ATQ,
80% of 100 = 0.8 × 100 = 80
The number of lab evaluations with more than 80 marks = 3
So, the required probability = (3/5) = 0.6
In a certain code language, ‘disk wood hat’ is coded as 'gl mu mv' and ‘bird ocean disk’ is coded as ‘mu ml mq’. How is ‘disk’ coded in ...
Shishir starts from Point Y and drives 15 km towards the North. He then takes a right turn, drives 35 km, turns right and drives 29 km. He then takes a ...
If the given sheet is folded to form a cube, which of the following figures is NOT possible?
In the following figure, Rhombus represents Authors, Circle represents Poets and triangle represents Actors. Which set of letters represents Poets who a...
 In a certain code language, MOAT’ is coded as ‘8652’ and ‘TRAM’ is coded as ‘4256’. What is the code for ‘R’ in the given code langu...
L is the wife of Q. P is the mother of M. J is the father of L. M is the sister of H. J is the husband of H. How is P related to L?
BCDF is related to EFGI in a certain way based on the English alphabetical order. In the same way, FGHJ is related to IJKM. To which of the following is...
Study the given pattern carefully and select the number from among the given options that can replace the question mark (?).
Select the Venn diagram that best represents the relationship between the following classes.
Snakes, Crocodiles, Reptiles
What will come in the place of '?' in the following equation, if '+' and '–' are interchanged and '×' and '÷' are interchanged?
357 × 7 + 19...
