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The logic followed here is:

Logic: Third Number = First Number × Second Number.

For,the set (3 - 6 - 18) → 

 3 × 6 = 18

For, the set (5 - 8 - 40) → 

5 × 8 = 40

Now, checking the options using the same pattern:

Option 1) 4 - 5 - 23

⇒ 4 × 5 = 20 ≠ 23

Option 2) 15 - 3 - 55

⇒ 15 × 3 = 45 ≠ 55

Option 3) 9 - 8 - 64

⇒ 9 × 8 = 72 ≠ 64

Option 4) 2 - 7 - 14

⇒ 2 × 7 = 14

Hence, the correct answer is Option 4.

Given

Statements:

All dusters are wipers.

All wipers are buckets.

The least possible Venn diagram for the given statements is:

Conclusions:

I. No bucket is a duster → Does not follow (Since all dusters are inside buckets, there must be an overlap between buckets and dusters)

II. Some buckets are dusters → Follow (Because all dusters lie inside buckets, so at least some buckets are dusters)

So, only conclusion II follows.

Hence, the correct answer is "Option 1".

BODMAS Table: 

Decoding the given information:

Now, replacing the sign from left to right using BODMAS Rule, we get:

⇒ 76 ÷ 4 + 18 × 9 − 12 × 2 + 180 ÷ 2 − 15 × 3 + 151 = ?

⇒ 19 + 162 − 24 + 90 − 45 + 151 = ?

⇒ (19 + 162 + 90 + 151) − (24 + 45) = ?

⇒ 422 − 69 = ?

⇒ 353

Hence, the correct option is "Option 3".

Given:

‘ships cross seas’ is coded as ‘qn ed jy’

‘spot the ships’ is coded as ‘jy is tk’

So, the code for ships = jy

Hence, the correct answer is Option 1.

The logic followed here is:

For, ZCIS → WAMU

For, TINV → QGRX

Now, applying the same pattern to ODLK:

So, ODLK → LBPM

Hence, the correct answer is Option 4.

Given: A, B, C, D, E, F and G are sitting around a circular table facing the centre.

C sits second to the right of D.

Only one person sits between B and C.

F is the immediate neighbour of G and B.

A sits third to the left of G.

Total people between E and B = 2

Hence, the correct answer is "Option 3".

The logic followed here is based on the alphabetical position pattern:

Option 1: EKP

Option 2: MSZ

Option 3: KQV

Option 4: QWB

Thus, MSZ does not follow the uniform pattern of +6, +5.

Hence, the odd one out is Option 2.

The logic followed here is:

thus, "143" will replace the question mark in the given series.

Hence, the correct option is "Option 1".

Given: L, M, N, O, P, Q and R are sitting in a straight row, facing north.

Only three people sit to the left of M.

M sits third to the left of N.

Q sits fourth to the left of R.

P is not an immediate neighbour of M.

L sits second to the right of P.

Now, the person to the immediate right of M is: O

Hence, the correct answer is "Option 4".

Given

Statements:

All horses are ants.

Some horses are donkeys.

No donkey is a bull.

The least possible Venn diagram for the given statements is:

Conclusions:

I. Some ants are donkeys  → Follows (Since some horses are donkeys and all horses are ants, those donkey-horses must lie within ants)

II. No bull is a donkey → Follows (Given directly: No donkey is a bull, so the relationship is symmetric)

So, both conclusions I and II follow.

Hence, the correct answer is "Option 3".