Orange Test 
Realistic Test Mode
This mode is designed to mimic the appearance, contents and scoring of the Numerical Test that is part of the Optiver application process.
Performance
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Targeted Practice Mode
Integers
Practice the questions from the Orange Test that involve arithmetic operations with integers.
Performance
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Decimals
Practice the questions from the Orange Test that involve arithmetic operations with decimals.
Performance
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Fractions
Practice the questions from the Orange Test that involve arithmetic operations with fractions.
Performance
Progress chart