Read the sentence below to find out whether there is any grammatical or idiomatic error in it. The error, if any, will be in one part of the sentence. Select the part with the error as your answer. If there is no error, select 'No error' as your answer. (Ignore errors of punctuation, if any.)

After a few minutes, I looked (a) / up and saw that (b) / all the birds are flying (c) / high up in the sky (d) / No error (e)

Read the sentence below to find out whether there is any grammatical or idiomatic error in it. The error, if any, will be in one part of the sentence. Select the part with the error as your answer. If there is no error, select 'No error' as your answer. (Ignore errors of punctuation, if any.)

They all believed that (a) / regular practice had (b) / helped the boy (c) / become best singer in his class (d) / No error (e)

Read the sentence below to find out whether there is any grammatical or idiomatic error in it. The error, if any, will be in one part of the sentence. Select the part with the error as your answer. If there is no error, select 'No error' as your answer. (Ignore errors of punctuation, if any.)

If you lend her (a) / a novel, she will lend (b) / it to someone else and (c) / never you will get it back (d) / No error (e)

Read the sentence below to find out whether there is any grammatical or idiomatic error in it. The error, if any, will be in one part of the sentence. Select the part with the error as your answer. If there is no error, select 'No error' as your answer. (Ignore errors of punctuation, if any.)

The man thought that (a) / the company hired (b) / the girl because she was(c) / a M.A. in Economics. (d) / No error (e)

In a certain code, if

$‘256’$ means ‘eat mango daily’

$‘637’$ means ‘mango is sweet’

$‘358’$ means ‘eat sweet regularly’,

Which of the following represents 'is' in that code?

What is the number that comes at question mark (?) place.

$M \times N$ : $13 \times 14$ ::$F \times R$ : $?$