Question

Direction :
A class is to be taught five subjects - Hindi, Physics, Chemistry, Biology and
Mathematics by five different teachers - A, B, C, D and E in five periods
(1 to 5). A teacher can teach in only one of the periods. The following details
are available about the teaching,
i A teaches mathematics which is not taught in the first period.
ii. Physics is taught by D in an even numbered period.
iii. Chemistry is taught in an odd period, and it precedes mathematics period.
iv. E teaches in the first period.
C teaches Chemistry but not in the first or the last periods.
vi. Hindi is taught in the last period.
Which subject is taught by B?
(A) Physics
(B) Chemistry
(C) Biology
(D) Hindi​

Answer 1

Answer:

3

Step-by-step explanation:

Answer 2

Answer:

Option(D) Hindi  Subject is taught by B

Step-by-step explanation:

Explanation:

Given ,  Hindi is taught in the last period .

E teaches in the first period , A teaches mathematics which is not taught in the first period . Chemistry is taught in an odd period and it precedes mathematics periods. And Physic is taught by D in an even numbered period .

Step 1:

From the above information we conclude that  ,

• E teaches in first period , and C teaches Chemistry in an odd period but not in the first or last period . So , C teaches in third period .

• And given in the question that , Chemistry is taught precedes mathematics . So , A teaches in 2nd period .
• Now , according to question physic is taught by D but in an even  numbered period . So , only 4th period is left which is an even numbered period .Therefore D teaches in 4th period .
• Hindi is taught in last period , this means Biology is taught by E in first period .

So,  Biology is taught by E in first period , Mathematic is taught by A in 2nd period , Chemistry is taught by C in 3rd period and Physic is taught by D in  4th period .

Therefore ,  Hindi is taught by B in last period .

Final answer :

Hence , Hindi is taught by B .

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