Question

In a test, +3 marks are given for every correct answer and

–1 mark is given for every incorrect answer. Sona attempted all

the questions and scored +15 marks though she got 10 correct

answers.

(i) How many incorrect answers has she attempted?

(ii) How many questions were given in the test?

(iii) Reflect on the ways in which you can minimize errors while

attempting any MCQ’s questions.​

Answer 1

Answer:

Instruments measured the diamotor of a wire whose values are given below. Instrument 1 - 1.3 mm Instrument 2 - 1.32 mm Instrument 3 - 1.324 mm Instrument 4 - 1.03 mm The instrument having smallest value of least count le O (a) Instrument 1 O (b) Instrument 2 O (c) Instrument 3 O (d) Instrument 4

Answer 2

, we are given positive marks for every correct answer and negative marks for every incorrect answer i.e. for the correct answer =+3 and for every incorrect answer =−2 mark. So, the total marks for correct answer = marks for correct answer × number of correct answers

step by step explanation:

CORRECT ANS :-10×3=30