Q1. Find the next number in the series: 3, 6, 18, 72, ?
Explanation
The multipliers are ×2, ×3, ×4, ×5. So the next term = 72 × 5 = 360.
Practice 94 Mental Ability multiple-choice questions with detailed answers and explanations. Ideal for RAS/RPSC exam preparation.
Q1. Find the next number in the series: 3, 6, 18, 72, ?
Explanation
The multipliers are ×2, ×3, ×4, ×5. So the next term = 72 × 5 = 360.
Q2. Find the next letter in the series: A, C, E, G, ?
Explanation
The series skips one letter each time (gap of 2 positions): A(1), C(3), E(5), G(7), I(9).
Q3. Doctor : Patient :: Lawyer : ?
Explanation
A doctor serves a patient; a lawyer serves a client. Relation: professional to the person served.
Q4. Seema starts from her home, walks 5 km towards East, turns left and walks 3 km, turns left again and walks 5 km. In which direction is she now facing?
Explanation
Starts facing East. Walks 5 km East. Turns left (now faces North), walks 3 km. Turns left (now faces West), walks 5 km. She is now facing West.
Q5. In a figure where a triangle has a line parallel to the base passing through the midpoints of the two sides, and both diagonals of the resulting trapezoid are drawn, how many triangles are formed?
Explanation
The midline divides the original triangle into a smaller triangle (top) and a trapezoid (bottom). With the diagonals of the trapezoid drawn, we get: 1 top triangle + 4 small triangles in the trapezoid + 2 medium triangles (combining pairs) + 1 large bottom half triangle = 8 triangles total.
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Q6. A rectangular paper is folded once along its length. A right-angled triangle is cut from one corner of the folded edge. When unfolded, the cut-out shape will be:
Q7. In a code, DELHI is written as CDKGH. What will PATNA be written as?
Q8. In a class of 35 students, Meena's rank from the top is 12th. After interchange with Seema, Meena's rank becomes 22nd from the top. What was Seema's original rank from the bottom?
Q9. Find the missing number in the matrix: | 2 3 6 | | 4 5 20 | | 7 3 ? |
Q10. Find the missing number: | 8 6 4 | | 12 9 6 | | 20 15 ? |
Q11. Find the next number in the series: 2, 5, 10, 17, 26, ?
Q12. If 15th August 2023 was a Tuesday, what day of the week was 15th August 2024?
Q13. ACEG : BDFH :: MOQS : ?
Q14. What is the mirror image of the number 3218 when a mirror is placed on the right?
Q15. AZ : BY :: CX : ?
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