SSC CGL / CHSL / MTS - MCQ Practice Questions

Each letter is shifted by +1 position. P→Q, E→F, N→O, C→D, I→J, L→M. Similarly, S→T, C→D, I→J, E→F, N→O, C→D, E→F gives TDGJOCF. Check: SCIENCE = TDGMSHF (each letter +1)

From 'some Cats are Dogs' and 'some Dogs are Pigs', we cannot conclude that 'some Cats are Pigs' or 'some Pigs are Cats'. The overlap is insufficient.

9=3², 16=4², 25=5² (consecutive perfect squares). Similarly, 25=5², 36=6², 49=7² maintains the same relationship of consecutive perfect squares.

Code equals number of letters: FISH(4)=6 means +2, BIRD(4)=7 means +3, ELEPHANT(8)=9 means +1. Pattern: Total unique consonants + vowels differently counted. ELEPHANT has 8 letters, coded as 9.

# Solution: Find the Odd One Out

We need to find the pattern connecting four of the five numbers, then identify which one doesn't fit.

## Step 1: Test for Product of Consecutive Integers

Let me check if each number can be expressed as a product of two consecutive integers using the form $n(n+1)$:

For 24: $4\times 5=20$? No. Try $n^2+n=24\Rightarrow n=\frac{-1+\sqrt{97}}{2}$?

Actually: $4\times 6=24$ ✓ (but not consecutive)

Let me reconsider: Check factorizations more carefully.

## Step 2: Examine Prime Factorizations & Products

## Step 3: Check for Product of Numbers with Specific Difference

Notice the difference between factors:

## Step 4: Identify the True Pattern

Four numbers are products of integers where the difference between factors is even (2, 4, or 2):

But 91 = $7\times 13$, where the difference is 6 (even) too.

Alternative pattern: Four numbers have even prime factors; 91 = 7 × 13 uses only odd primes, making it the odd one out.

Answer: 91 (Option D)

# Solution: Letter-to-Digit Coding

This is a position-based cipher where each letter is mapped to a unique digit based on its position in the given words.

## Step 1: Create the Mapping from SCIENCE

Given: SCIENCE is coded as 1234567

Note: C appears twice (positions 2 and 6), but maps to different digits in this sequence.

## Step 2: Verify the Mapping Using PRACTICE

Given: PRACTICE is coded as 8946217

Wait—let me reconcile: From SCIENCE, $C\to 2$ and $6$; from PRACTICE position 4, $C\to 6$; position 7, $C\to 7$. This tells us each position in the codeword gives a different mapping.

## Step 3: Extract the Consistent Letter Codes

Comparing both words, the most reliable letters are:

From SCIENCE: $C$ (pos 3) = 2, $O$ (pos 4) = 4, $D$ (pos 5) = 6, $E$ (pos 6) = 1

Corrected approach: Each unique letter gets a fixed digit:

Direct mapping from both words:

## Step 4: Code the Word CODE

Answer: 2461 (Option B)

Area = πr². If r becomes 1.5r, new area = π(1.5r)² = 2.25πr². Increase = 2.25-1 = 1.25 = 125%

Reading rate = $\frac{25}{45}$ pages per minute. In 180 minutes (3 hours): ($\frac{25}{45}$) × 180 = 100 pages.