Question:
Find the odd one out in the series:
\[
3,\;5,\;7,\;11,\;13,\;17,\;19,\;23,\;29,\;91
\]
Find the odd one out in the series:
\[
3,\;5,\;7,\;11,\;13,\;17,\;19,\;23,\;29,\;91
\]
Show Hint
In number series, always check whether all terms belong to a special category like prime, square, cube, or multiples.
Updated On: Jul 15, 2026
- \(23\)
- \(13\)
- \(11\)
- \(91\)
Show Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Concept:
To find the odd one out, observe the common property of the numbers.
Step 1: Check the pattern.
The numbers: \[ 3,5,7,11,13,17,19,23,29 \] are all prime numbers. A prime number has exactly two factors: \(1\) and itself.
Step 2: Check 91.
\[ 91=7 \times 13 \] So 91 has factors: \[ 1,\;7,\;13,\;91 \] Thus, 91 is not a prime number. Hence, it does not follow the pattern. So the odd one out is: \[ \boxed{91} \]
Step 1: Check the pattern.
The numbers: \[ 3,5,7,11,13,17,19,23,29 \] are all prime numbers. A prime number has exactly two factors: \(1\) and itself.
Step 2: Check 91.
\[ 91=7 \times 13 \] So 91 has factors: \[ 1,\;7,\;13,\;91 \] Thus, 91 is not a prime number. Hence, it does not follow the pattern. So the odd one out is: \[ \boxed{91} \]
Was this answer helpful?
0
0
Top TG ICET Analytical Ability Questions
- What is the average of the integers 1, 2, 3, 4, and \(x\)? Statement (I): \(x\) is an even integer. Statement (II): \(x<10\)
- What is the average of \(x,y,z\) and \(t\)? Statement (I): \(x+z=12\) Statement (II): \(y+t=24\)
- What is the sum of the first 30 terms of an Arithmetic Progression? Statement (I): The common difference of the A.P. is 5. Statement (II): The first and the last terms are 2 and 60 respectively.
- In triangle \(ABC\), is \(\angle A\) obtuse? Statement (I): \(\angle C\) is acute. Statement (II): \(\angle B\) is obtuse.
- What is the circumference of the regular hexagon? Statement (I): The radius of the circumcircle of the hexagon is \(6\) cm. Statement (II): Each side of the hexagon subtends an angle of \(60^\circ\) at the centre.
View More Questions
Top TG ICET Thinking and problem solving Questions
- Find the odd pair out: \[ (12,156),\ (14,210),\ (16,272),\ (18,342),\ (20,420),\ (22,508) \]
- Find the odd term out: \[ \frac{41}{29},\ \frac{53}{43},\ \frac{67}{59},\ \frac{79}{73},\ \frac{89}{83},\ \frac{97}{91} \]
- Elephant, Camel, Horse, Bison, Donkey, Bear
- Triangle, Pentagon, Hexagon, Septagon, Nonagon, Hendecagon
- Aizawl, Bhopal, Chennai, Dispur, Hyderabad, Imphal, Chandigarh
View More Questions
Top TG ICET Questions
- What is the average of the integers 1, 2, 3, 4, and \(x\)? Statement (I): \(x\) is an even integer. Statement (II): \(x<10\)
- What is the average of \(x,y,z\) and \(t\)? Statement (I): \(x+z=12\) Statement (II): \(y+t=24\)
- What is the sum of the first 30 terms of an Arithmetic Progression? Statement (I): The common difference of the A.P. is 5. Statement (II): The first and the last terms are 2 and 60 respectively.
- In triangle \(ABC\), is \(\angle A\) obtuse? Statement (I): \(\angle C\) is acute. Statement (II): \(\angle B\) is obtuse.
- What is the circumference of the regular hexagon? Statement (I): The radius of the circumcircle of the hexagon is \(6\) cm. Statement (II): Each side of the hexagon subtends an angle of \(60^\circ\) at the centre.
View More Questions