Given equation: 42 × 7 ÷ 13 - 87 + 12 = ?

If '+' and '-' are interchanged and '×' and '÷' are interchanged, then the equation becomes:

42 ÷ 7 × 13 + 87 - 12 = ?

⇒ 6 × 13 + 87 - 12 = ?

⇒ 78 + 87 - 12 = ?

⇒ 165 - 12 = ?

⇒ 153 = ?

Hence, ‘153’ is the correct answer.

As per the given information,

1) Rashmi is shorter than Monika who is shorter than Prerna.

Prerna > Monika > Rashmi

2) Harshita is taller than Prerna.

Harshita > Prerna > Monika > Rashmi

3) Uma is shorter than Nikita and taller than Harshita.

Nikita > Uma > Harshita > Prerna > Monika > Rashmi

4) Sana is shorter than Rashmi.

Nikita > Uma > Harshita > Prerna > Monika > Rashmi > Sana

Here, we can see that Sana is the shortest.

Hence, the correct answer is "Sana".

The correct arrangement in a logical and meaningful order is,

3) letter

5) word

4) phrase

2) sentence

1) chapter

Hence, the correct answer is "3, 5, 4, 2, 1".

Given:

66, 87, 110, ?, 162, 191

The logic followed in the given series is:

Here, the missing term is '135'.

Hence, the correct answer is "Option (4)".

As per the given information, the sitting arrangement is:

1. Kajal is second to the left of Laxmi and Payal is the immediate neighbour of both Mansi and Laxmi.

2. Aarti is second to the left of Kajal and Monika is not the immediate neighbour of Laxmi.

3. The remaining girl Shweta is sitting to the right of Kajal.

Here, 'Shweta' is sitting second to the left of Payal.

Hence, the correct answer is "Option (4)".

Mustang is a specific breed or type of Horse.

Similarly;

The Burmese cat is a breed of domestic cat, originating in Burma, believed to have its roots near the Thai-Burma border and developed in the United States and Britain.

Hence, the correct answer is "Burmese : Cat".

The logic followed here is:

Hence,  "Option (2)" is the correct answer.

By using the following symbols in the table given below, we can draw the following family tree:

Given statement: Pointing towards Kapil, Shilpa said, "His mother's brother is the father of my son Ashish".

→ Shilpa said that Kapil's mother's brother i.e. Kapil's maternal uncle is the father of Shilpa's son Ashish.

Clearly, Kapil is the nephew of Shilpa.

Hence, the correct answer is "Nephew".

Given Statements:

All valleys are mountains.

No sea is a mountain.

Some plains are seas.

The least possible Venn diagram for the given statement is:

Conclusions:

I. Some valleys are plains - False (Because, No definite relation given between valleys and plains, So, Some valleys are plains can be possible only).

II. No plain is a mountain - False (Because, No definite relation given between plain and mountain, So, No plain is a mountain can be possible only).

III. No sea is a valley - True (Because, All the valleys are mountains and No mountain is Sea, so No sea is a valley).

So, Only conclusion III follows.

Hence, the correct answer is "Option 2".

Here, we use the BODMAS table given below:

Given:

⇒ 7 × 14 ÷ 6 + 12 + 6 = 30

(1) 7 and 6 × and ÷

⇒ 7 × 14 ÷ 6 + 12 + 6 = 30

After interchanging the sign and number:

⇒ 6 ÷ 14 × 7 + 12 + 7 = 30

Apply BODMAS rule:

⇒ 0.428 × 7 + 12 + 7

⇒ 3 + 12 + 7

⇒ 15 + 7 = 22

Here, the equation is not satisfied.

(2) 7 and 14, × and ÷

⇒ 7 × 14 ÷ 6 + 12 + 6 = 30

After interchanging the sign and number:

⇒ 14 ÷ 7 × 6 + 12 + 6 = 30

Apply BODMAS rule:

⇒ 2 × 6 + 12 + 6

⇒ 12 + 12 + 6

⇒ 24 + 6 = 30

⇒ '14 ÷ 7 × 6 + 12 + 6 = 30'

Here, the equation is satisfied.

(3) 7 and 6, ÷ and +

⇒ 7 × 14 ÷ 6 + 12 + 6 = 30

After interchanging the sign and number:

⇒ 6 × 14 + 7 ÷ 12 ÷ 7 = 30

Apply BODMAS rule:

⇒ 6 × 14 + 7 ÷ 1.714

⇒ 6 × 14 + 4.08

⇒ 84 + 4.08

⇒ 88.08

Here, the equation is not satisfied.

(4) 7 and 14, × and +

⇒ 7 × 14 ÷ 6 + 12 + 6 = 30

After interchanging the sign and number:

⇒ 14 + 7 ÷ 6 × 12 × 6 = 30

Apply BODMAS rule:

⇒ 14 + 7 ÷ 6 × 12 × 6

⇒ 14 + 1.166 × 12 × 6

⇒ 14 + 84 = 98

Here, the equation is not satisfied.

Hence, the correct answer is "Option (3)".