1. String & Character Matching

What is this?

You are given two codes, serial numbers, or words.

Your job is to find whether they are exactly the same or different.

Even one different character means the strings are not the same.

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Easy Rules

Compare one character at a time from left to right.

Look carefully for similar-looking characters like

0  ↔  O

1  ↔  I

5  ↔  S

8  ↔  B

2  ↔  Z

6  ↔  G

Also check for

• Missing letters
• Extra letters
• Swapped letters
• Uppercase vs lowercase

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Example

Compare

String A

ACX-7841-PQ0

String B

ACX-784I-PQ0

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Step 1

Compare each character.

A C X - 7 8 4 1 - P Q 0
│ │ │ │ │ │ │ │ │ │ │ │
A C X - 7 8 4 I - P Q 0

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Step 2

Everything matches until

1

and

I

These only look alike.

They are different characters.

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Final Answer

❌ Different

Difference

1 ≠ I

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Quick Trick

Whenever you compare strings,

use your finger (or pencil) and move one character at a time.

✔ Compare Left → Right

A=A ✔

C=C ✔

X=X ✔

7=7 ✔

1≠I ✘

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2. Data Verification

What is this?

You are given a table.

Check whether every value is correct.

Usually,

Quantity × Rate = Total

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Example

Item	Qty	Rate	Total
Pens	10	$1.50	$15.00
Notebook	5	$3.00	$14.00

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Step 1

Check Pens

10 × 1.50

=

15.00

Matches.

✔ Correct

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Step 2

Check Notebook

5 × 3.00

=

15.00

But table says

14.00

So

15 ≠ 14

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Final Answer

Pens

✔ Correct

Notebook

❌ Wrong

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Quick Verification Checklist

✔ Quantity

✔ Rate

✔ Total

✔ Units

✔ No missing values

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3. Visual Icon Scanning

What is this?

Many pictures look almost the same.

Find the one different picture.

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Easy Rules

Scan

• Left → Right
• Top → Bottom

Don’t jump randomly.

Look for

• Rotation
• Missing parts
• Different direction
• Mirror image
• Different size

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Example

Find the odd arrow.

→ → → → →

→ → ← → →

→ → → → →

→ → → → →

→ → → → →

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Step 1

Scan Row 1

→ → → → →

All same.

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Step 2

Scan Row 2

→ → ← → →

The third arrow points left.

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Step 3

Continue scanning.

Everything else points right.

So there is only one different arrow.

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Final Answer

Row 2

Column 3

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Another Example

Find the odd symbol.

○ ○ ○ ○

○ ● ○ ○

○ ○ ○ ○

Only one filled circle.

Answer

Row 2

Column 2

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