The Rajasthan Board of Secondary Education (RBSE) conducted the Class 10 Mathematics Exam 2026 recently across various examination centers. Students who appeared for the paper can now check the RBSE 10th Maths Unofficial Answer Key 2026 to estimate their scores before the official release.
Our subject experts have analyzed the paper and provided detailed section-wise answers, solutions, and correct options for each question.
RBSE Class 10th Maths Paper 2026 – Question-Wise Answer Key
| Question No. | Question (Summary) | Correct Answer |
| 1 (i) | HCF of numbers 16 and 20 | (b) 4 |
| 1 (ii) | Which of the following is an irrational number? | (c) 0.53261.... |
| 1 (iii) | Number of zeroes of polynomial $P(x)$ for given graph | (c) 2 |
| 1 (iv) | Value of $y$ for linear equations $x=4; x - 3y = 19$ | (a) -5 |
| 1 (v) | Sum of $n$ terms of an A.P. ($a, a+d, a+2d...$) | (d) $S_n = \frac{n}{2}[2a + (n-1)d]$ |
| 1 (vi) | Sum of 10 terms of A.P. where $a=11$ and $10^{th}$ term is $20$ | (b) 155 |
| 1 (vii) | In given figure (similar triangles), value of $\angle P$ | (d) 58° |
| 1 (viii) | Max tangents from an external point to a circle | (d) 2 |
| 1 (ix) | If $\angle POQ = 125°$ in a circle, $\angle PTQ$ is: | (a) 55° |
| 1 (x) | Mid-point of points $(4, -1)$ and $(-2, -3)$ | (b) (1, -2) |
| 1 (xi) | If $\sin A = 4/5$, then $\cos A$ is: | (d) 3/5 |
| 1 (xii) | Shadow length of 1m rod if angle of elevation is 30° | (a) $\sqrt{3}$ m |
| 1 (xiii) | Area of major sector if minor sector is $54 cm^2$ ($r=7$) | (c) 100 $cm^2$ |
| 1 (xiv) | Total surface area of a solid sphere of radius $r$ | (d) $4\pi r^2$ |
| 1 (xv) | Total surface area of a cube with side 1cm | (a) 6 $cm^2$ |
| 1 (xvi) | Mode of the given frequency distribution | (b) 6 |
| 1 (xvii) | Lower limit of the median class | (c) 20 |
| 1 (xviii) | Probability of getting head in a coin toss | (b) 1/2 |
Very Short Answer Type (Section A)
-
3 (i): 4n4n cannot end with 0 → No
-
3 (ii): Prime factors of 144 → 24×3224×32
-
3 (iv): For x + y = 5, x - y = 1 → x = 3, y = 2
-
3 (v): Terms in A.P. (1, 3, 5,…, 19) → 10 terms
Fill in the Blanks:
-
(i) b2−4ac=0b2−4ac=0 → Two equal real roots
-
(ii) nth term of A.P. → an=a+(n−1)dan=a+(n−1)d
-
(iii) Similar triangles → Proportional
-
(iv) Tangent to circle → Perpendicular to radius
-
(v) csc260°−cot260°=1csc260°−cot260°=1
-
(vi) Probability of impossible event → 0
How to Use This Unofficial RBSE 10th Maths Answer Key 2026
Students can use this unofficial RBSE 10th Maths answer key to cross-check each question they attempted in the exam and note how many responses are correct. Compare your answers with the key, apply the official marking scheme, and calculate your probable score to understand your expected performance before results are declared. Use this estimate only for self-evaluation, exam analysis, and planning your next subjects or future preparation, not as a final or official scorecard.
For better accuracy, keep your original OMR/answer sheet pattern in front of you, avoid double marking, and do not count questions you left blank. You can also discuss any doubtful questions with teachers or coaching mentors so you understand the correct method and avoid repeating the same mistakes in future exams.
Official vs Unofficial RBSE 10th Maths Answer Key
The official RBSE 10th Maths answer key is released only by the Rajasthan Board of Secondary Education on its official website and is used as the final reference for evaluation and result preparation. It may be published as a provisional key (where objections can be raised) followed by a final, unchangeable key; the final official key is what decides marks and results.
The unofficial answer key is prepared by teachers, coaching institutes, or educational portals, usually on the same day of the exam, to help students quickly estimate scores and analyze difficulty level. While expert-made keys are generally reliable, they may differ from the official version in a few questions, so students should treat them as a helpful guide—not as the basis for claiming marks or filing official challenges.
Disclaimer
This RBSE Class 10 Maths Answer Key 2026 is unofficial and prepared by academic experts for students’ reference. The official answer key will be released later by the Rajasthan Board of Secondary Education (RBSE) on its official website rajeduboard.rajasthan.gov.in.
