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I am doing browser testing for the different firefox versions. Shall I use only the latest version to cover the lower versions?

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I heard that if i test using the latest firefox version which is 32, it would be sufficient and I do not need to test the older versions e.g., 26, 27, 28, 29, 30, 31.

Is that a correct assumption?

I heard that if i test using the latest firefox version which is 32, it would be sufficient and I do not need to test the older versions e.g., 26, 27, 28, 29, 30, 31. Is that a correct assumption?

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You may want to test with the Firefox 24 ESR and Firefox 31 ESR version as those are still supported with security updates. Firefox 24.8.0 and 31.1.0 ESR: