alleryStart learning →Find the next number in the series: 2, 6, 12, 20, 30, ?
- 36
- 42
- 44
- 40
Show answer and solution
Correct answer: B. 42
Differences are 4, 6, 8, 10, so the next difference is 12: $30 + 12 = 42$.
(General term $n(n+1)$.)
Uttarakhand Board Class 10 Classification — practice questions
Explore 36 free Classification questions in Uttarakhand Board Class 10 Reasoning. Open each question or exercise to read its content, reference answers and available explanation.
Practise Classification with Quill →Classification questions and exercises with answers
Showing questions 1–30 of 36.
Find the next number in the series: 2, 6, 12, 20, 30, ?Read the answer and worked solution →Which one does NOT belong with the others? Square, Rectangle, Rhombus, TriangleRead the answer and worked solution →Pointing to a photo, a man says, 'She is the daughter of my grandfather's only son.' How is the girl related to the man?Read the answer and worked solution →A man walks 5 km North, turns right and walks 3 km, turns right again and walks 5 km. How far is he from the start?Read the answer and worked solution →In a certain code, 'TEACHER' is written as 'VGCEJGT'. How is 'STUDENT' written?Read the answer and worked solution →Complete the analogy: Day : Night :: Hot : ?Read the answer and worked solution →Find the missing term: 3, 7, 16, 35, 74, ?Read the answer and worked solution →If '+' means '×', '×' means '−', '−' means '÷', '÷' means '+', then $16 \div 4 - 2 \times 6 + 2 = ?$Read the answer and worked solution →In a row of 40 students, A is 11th from the left and B is 15th from the right. How many students are between them?Read the answer and worked solution →Find the odd one out: 2, 3, 5, 7, 9, 11Read the answer and worked solution →Letter series: A, C, F, J, O, ?Read the answer and worked solution →Which number completes the pattern? 1, 4, 9, 16, 25, ?Read the answer and worked solution →A is the brother of B. B is the brother of C. C is the father of D. How is A related to D?Read the answer and worked solution →Find the next term: 1, 11, 21, 1211, 111221, ?Read the answer and worked solution →Statements: All pens are books. Some books are pencils. Conclusion which definitely follows:Read the answer and worked solution →If today is Wednesday, what day will it be after 100 days?Read the answer and worked solution →Match each proposition form to its letterRead the answer and worked solution →Universal or particular? Affirmative or negative?Read the answer and worked solution →Affirmative or negative?Read the answer and worked solution →Naming the formRead the answer and worked solution →True or false: what conversion allowsRead the answer and worked solution →Tap every inference that is actually validRead the answer and worked solution →Complete the four formsRead the answer and worked solution →True or false: what a universal claim coversRead the answer and worked solution →Deduction or induction?Read the answer and worked solution →Order the steps: test a syllogismRead the answer and worked solution →True or false: reasoning from two premisesRead the answer and worked solution →Assertion and reasonRead the answer and worked solution →Two are true, one is notRead the answer and worked solution →Three of these are wrong. Find the one that holds.Read the answer and worked solution →
Worked practice questions
Which one does NOT belong with the others? Square, Rectangle, Rhombus, Triangle
- Triangle
- Square
- Rectangle
- Rhombus
Show answer and solution
Correct answer: A. Triangle
Square, rectangle and rhombus are all quadrilaterals (4 sides).
A triangle has 3 sides, so it is the odd one out.
Pointing to a photo, a man says, 'She is the daughter of my grandfather's only son.' How is the girl related to the man?
- Niece
- Daughter
- Cousin
- Sister
Show answer and solution
Correct answer: D. Sister
'My grandfather's only son' is the man's own father.
The father's daughter is the man's sister.
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