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CREST CRO 2020 Reasoning Olympiad :

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Organisation : Centre for Research and Exams in Science and Technology (CREST)
Contest Name : CREST Reasoning Olympiad CRO 2020
Applicable For : Students of classes 1-10
Exam Date : 22nd Dec 2020 / 12th Jan 2021
Website :

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The CREST Reasoning Olympiad (CRO) is an international competitive exam held online for students in classes 1-10.

Related / Similar Olympiad : CREST CCO 2020

How to Participate?

Registration of Students through schools :
Prospectus containing the registration forms are sent to all schools registered with CREST Olympiads.

If your school is not registered with us, then please send an email to info [AT] and we will send you the prospectus soon. It is mandatory for schools to return the registration forms to CREST Olympiads, duly filled in and complete in all respects by the due date.

For individual participants :
If your school does not conduct Olympiads, then you can register as an individual participant as well.

Register Here :

CRO Exam Pattern

There will be only one level for all the classes. The exam is an objective-type test that the students need to complete in 60 minutes.

The exam consists of two sections
Section-1 : Logical Reasoning
Section-2 : Achievers Section

Other Important Information :
** There are separate question papers for each and every class.
** The medium of the exam is English.
** CBSE, ICSE/ISC and other State Board syllabus is followed for the setting of test papers.

** The exam is conducted online only using laptop, desktop or tablet with an Internet connection. It can’t be taken using a mobile device.
** In case the registration is not through school, the student will have to take exam from home.

Exam Fee

Exam fee for each subject is Rs. 225 for students studying and enrolling from India. For students studying and residing outside of India, the fee is $10 (US Dollars).

CRO Exam Schedule

** Practice 1 (Answer Key Dates) – 26th Nov 2020 (29th-30th Nov 2020)
** Practice 2 (Answer Key Dates) – 10th Dec 2020 (12th-13th Dec 2020)
** Level 1 Exam (Answer Key Dates) – 22nd Dec 2020 / 12th Jan 2021 (14th-15th Jan 2021)
** Level 2 Exam (Answer Key Dates) – NA

CRO Marking Scheme

Class Section No. of Questions Marks per Question Total Marks Total Time
(in minutes)
1st to 4th Logical Reasoning 25 1 25
Achievers Section 10 2 20
Grand Total 35 45 60
5th to 10th Logical Reasoning 40 1 40
Achievers Section 10 2 20
Grand Total 50 60 60


For students of classes 1-2 appearing in CEO, CSO and CMO exams, the awards and recognition is as follows :
** Top 15% students will be awarded with a merit certificate
** Top 5% students will be awarded with a medal and a merit certificate

** Top 3 students (registered through school) from every school with more than 25 students in a class appearing for an Olympiad exam will be awarded with a merit certificate

** Overall Top 3 students from classes 1-10 will be awarded with Achiever’s Trophy and Merit certificate
** Every participant will be awarded a digital participation certificate. This will be available in the dashboard of the participant.
** If a student meets 2 or more criteria then he/she will qualify for a higher award

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